Book One: God-Slayer

The first book in the series, "Highschool Project: God-Slayer," details the events in which a war between the Underworld and Heaven is closing in rapidly.

Set in the year 2020, the book begins when the protagonist, Zane Jackson, is killed by a fallen angel on his way home from school on February 10th. While he bleeds out on the floor, and his murderer approaches him, fog rolls into the scene, followed by the silhouette of a heavily-clothed figure who manages to save him. As it turns out, Zane has been reincarnated as a devil after being killed, and is to work under Black Crown, a guild of mages.

Below is a summary of all forty chapters in the book, and the epilogue.

Chapter One: Through The Heart (Black Crown Arc)
After a normal day of school, Zane Jackson is on his way home when he's suddenly attacked from behind by a mysterious stranger in a black robe. Revealing their true identity as a Soul Pawner, Zane lies helplessly as a strange mist rolls in, and a heavily-clothed mage appears before the two with a strange staff in their hands.

Chapter Two: A Wonderland
Waking up from what he believes to have been a strange dream, Zane finds a mysterious letter residing on his nightstand; it details to him that he's ben reincarnated as a devil, and that he should seek out a girl at his school: Amber Lucifer. After tracking down who he was told to find, he learns that he's been placed under the care of Black Crown, a guild of mages composed of reincarnated devils like himself.

Not only that, but he learns that his only friend and who he's known since his child hood, Summer, is a Devil-Slayer — a mage who is employed by the church to eliminate devils such as himself.

Chapter Three: Staffs of Revelation
Following an introduction to each member of Black Crown, Zane discovers that he's the host of a lost-god, who are entities that reside in humans and find a different host when the body they reside in dies. After the two other members of Black Crown that host a lost-god inside of them identify which one Zane has, he learns that he's currently hosting Emperor Unus, the strongest of the lost-gods and the god of elements.

Chapter Four: Lucifer's Three Cards
When one of the three SZ-Class Devils — a rank given to the strongest of devils — decides to visit Zane's town, chaos breaks out as Divinos, who was the devil behind Zane's resurrection, and Umbra, the final SZ-Class Devil, converge towards a common meeting spot in the park just outside of school.

Chapter Five: The Weather Girl
With rain pouring down heavily all across town, Zane is sent out to discover what's behind the rain; after walking around, he discovers the mage behind the rain: a girl his age from the Church. After making his acquaintance with the girl, Lucy Hollis, he learns that she had been unable to use her powers as the host of Sana, another one of the lost-gods, to heal a local man.

Taking matters into his own hands, Zane teams up with Lucy to find out what's happening to this man.

Chapter Six: Hidden Mysteries
After finding the cause behind the man's sickness — Clara Lucifer, Amber's younger sister and also the Princess of the Underworld — Zane, Lucy, and Amber, who suddenly makes an appearance, run into Escalus, the Shadow Devil-Slayer who had been tasked with eliminating the rampaging devil.

However, an SX-Class Angel by the name of Lagann suddenly appears before them.

Chapter Seven: Valentine's
With Summer having asked Zane to meet him at the school garden, he must keep himself on-guard as he prepares himself for a possible confrontation with a Devil-Slayer.

Chapter Eight: A Devil-Slaying Emergency (Underworld Arc)
Black Crown takes on a mission to find the cause of a mysterious poison being spread throughout the town, which leads them to run into Rowan Chambers, the Poison Devil-Slayer, who lead them right into a trap.

Following a tough battle that nearly results in all of their deaths, a mysterious man from the Underworld appears, telling them that they're being called forward by Lucifer himself.

Chapter Nine: A Living Style
After a short meeting in the Underworld, Black Crown learns of a rampaging threat in the Underworld who is going around and destroying several parts of different cities. Zane, as the host of Emperor Unus; Amber, the Princess of the Underworld; and Diana, one of the seven reigning Devil-Kings, are sent out to deal with the threat and discover what their intentions are.

Chapter Ten: Stunned
Zane learns of Project God-Slayer, a secret mission that took place twenty years ago that took children all across the Underworld, subjecting them to torturous experiments in order to create the perfect God-Slayer that could kill the God in Heaven.

Vantrius Mallor, one of the only four survivors — along with the aforementioned Umbra — is identified as the threat destroying cities in the Underworld; Zane, Amber, Diana have to defeat him and stop him in his rampage.

Chapter Eleven: The Five Shields
Using an advanced spell that combines Amber's Black Flames of Destruction with his own Fire Magic, Zane is able to fight off Van, whose White God-Slaying Magic was too powerful for the trio of mages to handle.

Falling unconscious due to the side effects of the spell, Zane wakes up one week later to find that he had been saved by a passing mage who had donated enough magic to save his life. With Van having disappeared, Black Crown meets back with Lucifer, who introduces them to the Five Shields, a small guild of mages composed of the most powerful SX-Class Devils, the second-highest rank.

Chapter Twelve: Truth Behold
At three in the morning, Amber wakes up Zane to tell him that they'll be going on a small mission to find a man, who posses Memory Magic and has knowledge on Project G-S, so that they can learn more about the secret expedition.

After successfully retrieving a good amount of information of Project G-S, the duo run into Umbra, who's accompanied by none other than Rowan Chambers.

Chapter Thirteen: Strength Beyond
Felix, the strongest of the SX-Class Devils, decides to train Zane and Amber so that the two can raise their external power — or in other words, physical strength. When on a run later that day, a chilling but powerful magical presence is felt far away in the forest, followed by a bolt of lightning that comes down from the sky.

Following the source of magic, Amber and Zane discover Divinos in a conversation with Kristina regarding Lightning Magic, though why the powerful and seclusive SZ-Class Devil is there, in unknown.

Chapter Fourteen: The Art of Dodging
With Divinos paying a visit to the palace, Felix proposes a challenge to Ms. Lucifer: if he can defeat Divinos, he'll be promoted to SZ-Class, and will have one wish of his choice granted.

Zane, who realizes that the wish has something to do with Amber, follows all of the present mages to a battlefield, where Divinos and Felix will face off; however, he soon learns of the overwhelming power gap between that of the highest and second-highest ranks.

Chapter Fifteen: Light & Dark
Following the reveal of Dragon-Slaying Magic, which is considered a taboo in the Underworld, from both Divinos and Felix, Zane wakes up early one morning to find Ruben staring out the balcony. Interrogating his early awakening, Zane learns of how Ruben died and became a devil like himself.

Later that day, with particles of White Magic floating through the air, Zane and Amber sneak out to confront Van, who has made a reappearance in the Underworld.

Chapter Sixteen: Dragons & Enigmas
Days after another a failed attempt to bring Van in, Zane learns of the history of Dragons and the Underworld, including that of the Dragon-Kings and Dragon-Gods, entities who are actually multiple times the size of a universe, but use magic to keep themselves in the Underworld.

Chapter Seventeen: Armored & Dangerous (Seven Deadly Sins Arc)
Not long after being sent back to the mortal world, Zane along with Ruben and Kristina are sent to investigate a run down mall, where they run into a trap placed by two vampires. Zane is separated from his teammates, having to fight one of the vampires on his own, who turns out to be a Devil-Slayer.

Chapter Eighteen: A Plot
After Zane is badly injured by Otis, the Armor Devil-Slayer, a green portal suddenly opens in the battlefield, with Lagann and Lucy making an appearance. With the two battlefields converging into one, Lagann takes it upon himself to fight both Otis and Treeve, the other vampire, on his own.

Chapter Nineteen: Out With the Old
Zane attends his school festival with Summer, where the two decide to have a competition for who can earn the most points. However, Zane runs into Spencer McCarthy, who is for some odd reason running a booth, and Jay Valentine, one of the Devil-Slayers who attends his school, who reveals he knows of Zane's identity as a devil.

Chapter Twenty: The Puppet & The Storm
Black Crown begins a quest to find the Secret of God, a powerful artifact that will assist the Underworld in a war against the Alliance. They visit an old house just outside of town, where they're meet a small girl with a puppet on her hand, who turns out be the Lightning Dragon-Slayer, and an old-woman, who instills to them a small amount of information on Divinos, who is the current Storm Dragon-Slayer.

Chapter Twenty-One: Seven Times
Making their way to the Secret of God, which is located in Israel, through the usage of Transportation Magic, Black Crown runs into a mysterious mage who causes Zane to have a mental breakdown. After the effects cools off, the mage, who decides to go by the temporary name of Frey, gives them a golden key to assist them with their quest.

Amber, who received information from Rowan, a spy in the Alliance, tells her guild-mates that the Seven Deadly Sins, a small guild of mages who harness the power of the sins themselves, are also after the Secret of God in order to prevent it from falling into enemy hands.

Chapter Twenty-Two: Pointless Puzzles & Riddles
Black Crown runs into a fainted god in the middle of a large crater, who revealed himself to be the Norse God Frey. After hearing the god's story, they learn that the man they met last night was actually Afeus Clover — one of the four survivors of Project G-S, and the Psychic God-Slayer.

With Frey transporting them the rest fo the way, Black Crown goes through a series of easy riddles to make their way to the Secret of God.

Chapter Twenty-Three: Sins of All
The Seven Deadly Sins reveal themselves before Black Crown, with one of the members, Frazier, using his magical abilities to create seven different dimensional spaces for one-on-one battles.

Zane is put up against Amina, the Sin of Lust, and a mage who uses Gun Magic.

Chapter Twenty-Four: Explosive Charity
After stalemating Amina in a battle, and learning that she's actually a girl from his childhood, Zane is given the remainder of her magic, and uses it to fuel himself to find his friends and assist them against the rest of the Seven Deadly Sins.

Chapter Twenty-Five: An Outage
Zane teams up with Melanie to fight Maddox, the Sin of Gluttony and a Giant-Slayer.

Chapter Twenty-Six: Prison-Style
Following a tough battle with Maddox that nearly kills them, Zane and Melanie come across Ruben's battle against Frazier, who uses a combination of Gravity Magic and Chain Magic.

Inheriting Ruben's Strength Magic temporarily, Zane is tasked with defeating Frazier on his own.

Chapter Twenty-Seven: Angels Among Us
Zane, Melanie and Ruben are teleported to a ship after escaping a crumbling room, where they find Lance, who talked his way out of a battle, relaxing as the ship brings them to a nearby island.

Lance and Zane take it upon themselves to go onto the island and assist Kristina and Chloe, who seem to be locked in a tag-team battle with Gibbs and Sylvia, the remaining members of the Seven Deadly Sins.

Chapter Twenty-Eight: The Magical Archive
After falling unconscious, Zane discovers that he's been taken to the Magical Archive, which is located in the twelfth dimension. There, he learns more about how magic — and Slaying Magic specifically — works.

When he awakes, he finds that Black Crown has touched down upon another island, where Amber is currently facing off against Jasper — the leader of the Seven Deadly Sins; an SZ-Class Angel; and the Water Devil-Slayer.

Chapter Twenty-Nine: Painted Gold & Powerful
With Black Crown failing to put Jasper down, Amber is forced to distract the final member of the Seven Deadly Sins as Zane, who is taken to a different dimensional space, where a past host of Emperor Unus awaits him, is given a special but risky and temporary power that could be used to change the tide of battles.

Accepting all risks, Zane inherits the power of Gold Dragon-Slaying Magic, and activates a full set of armor for the first time through his subsequent Dragonification.

Chapter Thirty: Before The Storm
Meanwhile Zane and Jasper fight it out, Divinos confronts Van in the Realm of Fallen Angels under unknown circumstances. Following a short but important fight, Divinos defeats Van and takes one of the Seven Sacred Staffs for his own, adding it to the five he already owns.

After Zane is successful in defeating Jasper, he's shot in the back by a blast of White Magic which comes from Ellie, who decides to step into the fight; however, before anyone can be killed, an injured Van appears on the battlefield.

Chapter Thirty-One: Within Time (Underworld Versus Heaven Arc)
After surviving the fight with the Seven Deadly Sins, but failing to retrieve the Secret of God, Black Crown returns to their everyday life.

Zane and Melanie take on a mission to find out what's been going around killing mortals.

Chapter Thirty-Two: A Hollow Hole
Zane and Melanie fight off Gigan, an artificial being capable of absorbing magic, but are unable to finish the job as Kristina, who appears at the battle, takes the liberty of finishing it for himself.

Later that night, Zane is visited by Reaper Kurosami, an SX-Class Devil who was behind Melanie's resurrection.

Chapter Thirty-Three: By The Map
Chloe and Zane take on a mission to assist Reaper Kurosami in retrieving an artifact that can seal souls.

Chapter Thirty-Four: There Shall Be War
With the Alliance unexpectedly launching there attack on the Underworld, Amber and Zane are tasked by Lucifer to retrieve Alzon — the secret, fourth SZ-Class Devil and the strongest of them, who also suffers from having a split-personality.

Chapter Thirty-Five: Six Feet Beneath
Zane splits up from the rest of Black Crown to travel from city to city, finding different mages from the Alliance to fight off; however, he ends up running into Bones, an SZ-Class Fallen Angel capable of manipulating half of his limbs at once.

Chapter Thirty-Six: Fated Encounter
The Underworld's most powerful mages, including Black Crown, gather back at Lucifer's palace, where they discuss a big problem on their hands — dragons, with a large number of them converging towards the center of the battlefield, where Amber is currently trapped.

However, the magical screen they use begins to indicate that the number of dragons, which was around fifty, is rapidly decreasing. Using magic to find out that cause of the dissapearences, they discover that Divinos has made his appearance on the battlefield, using his Storm Dragon-Slaying Magic to shoot dragons out of the sky with bolts of silver lightning.

Zane, Kristina and Melanie are sent out to take out a small group of Devil-Slayers, where they'll likely meet Jay and Summer.

Chapter Thirty-Seven: Goodbye, Now & Forever
Zane runs into Summer, who reveals that she's known about his identity as a devil from day one. After she nearly passes out in front of him, Zane learns that she's slowly dying from Poison Magic, and that he's unable to do anything.

Taking her Fire Devil-Slaying Magic as a final gift, Zane confronts Jay along with Kristina and Melanie.

Chapter Thirty-Eight: Battle of Ideals
After Jay suddenly kills one of Black Crown's members, Zane rages out against Jay again but is unable to defeat him, collapsing before being able to land a finishing blow. As Jay prepares to finish off the last two remaining mages, a silver jolt of lightning comes down from the sky, revealing none other than the Storm Dragon-Slayer.

Chapter Thirty-Nine: Heart of Destruction
His stamina recovered, Zane heads to the center of the war alone to make sure that Amber is alive, fighting off different mages along the way.

Chapter Forty: Trickery
Heaven learns of Van's trickery and calls off the war, with one member from each race being sent out to find Van and bring him in — Zane, who volunteers, Lagann, and Rowan. After discovering his location, the trio locks battle with the God-Slayer in a battle that'll determine the fate of existence as they know it.

Chapter Forty-One: A God in White
Lagann, Rowan and Zane are successfully in defeat a base form Van, who compliments them for being able to defeat such a powerful opponent; however, they aren't done yet as Van transforms into his Divinity Unleashed form, which raises his power exponentially.

With Zane calling upon both Tsune and Summer's magic, he activates his Crimson-Gold Dragon-Slayer Mode, which allows him to use both his Dragon-Slaying Magic and Devil-Slaying Magic at once, hoping to be able to defeat Van in one last battle.

Chapter Forty-Two: The Chains That Bind Us All
Van reveals his final weapon — the God Bomb, the Secret of God which has taken the form of a bomb inside of him. Lagann, Rowan and Zane must call upon the last of their magic to push back the explosion, which is capable of destroying an entire solar system, before it destroys and kills every mage present in the war.