Toaru Majutsu no Index: New Testament - Volume 15, Epilogue: The Front Front Side of the Coin — Lock_on_Light_Girl.

Title: Multiversal Template SystemAlex was transmigrated to the body of a newly awakened mutant. The original owner of the body was also named Alex, Alex Locke, an ordinary college student. About a month ago, he suddenly awakened to a mutant ability and used it to escape unscathed from a burning building.Although he survived the disaster, there was no subsequent good fortune. A few days later, his parents discovered his mutant ability and, despising it, kicked him out of the house.He was then pursued by a mysterious organization and was accidentally abducted by gang members from Hell's Kitchen, ending up in this unknown underground prison.As for his mutant ability, it was a weak version of Sebastian Shaw's ability, which was the reason for him being captured. Just as Alex was despairing about how he will die just after transmigrating, a voice sounded in his ear.[ Congratulations, you have awakened the 'Multiversal Character Template System'! ][ You have obtained the character template: Gojo Satoru! ][ You have awakened the skill 'Six Eyes' lv1 ]“Oh...”A few hours later[ Template Fusion Rate: 5% ][ New Skill Unlocked: Limitless Technique ]

It took Gu Yu twenty years to realize that he turned out to be the vicious cannon fodder male supporting role in a novel.
Forcing the protagonist to sign a contract, and being playful and affectionate, he ended up with his family ruined and his family destroyed.
Just as he was about to establish a good relationship with the protagonist Gong and take advantage of the loopholes in the plot,
Who would have thought that the protagonist Gong in the book, and the ruthless boss who did not get along with the protagonist in the end, was actually his ex-boyfriend who was abandoned by him in high school? !
Oh ho!
Gu Yu: Thank you for the invitation, please don’t bother me.

Gu Yu, who was forced to follow the plot, faced the furious protagonist Gong who seemed to be about to commit murder in the next second. His ex-boyfriend,
With the wife of the future protagonist Gong in his arms, his current gossip partner, he numbly recited the lines: “I warn you, this is my man.”
Seeing Fu Yeyu, who was blazing in the eyes of the opposite party, who could pounce on him and tear him apart in the next second, he couldn’t help but reflect on himself: Why can’t I think about the protagonist’s attack? !

The main attack, the idler should be the heartless attack × the irritable boss suffers
Gu Yu×Fu Huayu

Content tags: strong, broken mirror, reunion, entertainment circle, wearing books
Search keywords: Protagonist: Gu Yu, Fu Huayu ┃ Supporting role: ┃ Others:
One-sentence introduction: Destroy, I’m tired
Conception: go round and round, or return to the original origin

- Description from novelbuddy

In the mystical land of Teyvat, where elemental forces collide and secrets of ancient gods remain buried, an ordinary traveler awakens to an extraordinary destiny. Armed with unparalleled ambition and a mysterious system, they embark on a quest to become the Supreme Arbiter—the ultimate authority over all creation.The world of Teyvat is no stranger to conflict, but its hidden truths are more treacherous than any battle. Beneath the veneer of harmony lies a struggle for dominance among divine beings, and the enigmatic Heavenly Principles rule from the shadows. Yet, this traveler defies fate itself, determined to shatter the chains of divine control and reshape the world.Guided by a unique power to harness and manipulate the essence of Teyvat’s elements, the protagonist builds alliances with heroes from every nation—Mondstadt’s free-spirited knights, Liyue’s calculative sages, and Inazuma’s thunderous warriors. However, their journey is far from peaceful. Ancient enemies, forbidden truths, and the ever-present gaze of Celestia test their resolve at every turn.As they ascend in power, unraveling secrets that defy the understanding of gods and mortals alike, one question looms: What does it mean to be the ultimate authority?Will they bring salvation to Teyvat, or become its greatest threat? The skies tremble, the earth stirs, and destiny itself bows before the rise of the Supreme Arbiter.

By some ill fortune, Hikaru died in a traffic accident. He was in heaven standing in line, waiting to be judged, when he took an unexpected request to transfer his soul to a person in another world. He received an ability called Soul Board which he could use to allocate points to Skills to make himself more powerful.

But there was a catch…

「I want you to take revenge on someone for me within an hour. If you don’t, I’ll destroy your soul.」

To pull off the task assigned to him, he poured all his available points to the Stealth skill tree.

This is a story of a boy who specialized in Stealth. With his skill trees as weapons, he would demonstrate his unrivaled strength in another world.