Toaru Majutsu no Index: New Testament - Volume 10, Chapter 12: V.S. “The Four Demon-Slaying Swords” Round_04.

How can there be any invincibility?

How can there be any Xeon undefeated?

No one in this world can be eternally number one, anyone can be defeated.

including me.

I’ve been waiting for that one person to show up, beat me, tell me that my way is wrong.

It’s a pity that that person hasn’t come yet.

…

False martial arts: strengthen yourself, break the limits of the human body, and resist bullets with flesh and blood.

Real martial arts: use the magnetic field of life to dominate the magnetic field of the stars, use the small universe of the human body to attract the power of the big universe, travel the starry sky, and smash the planet.

- Description from novelbuddy

Ark is a young Swedish man. Growing up without the loving care of parents had a big impact on his life and his personality turned out rather cold, even though he is a good person. His life ends abruptly when he suddenly dies of a rare disease, but his story doesn't. In fact, he gets reincarnated in a world of swords and magic... as a wolf? Follow Ark as he tries his hardest to evolve and survive in this new world fraught with danger, after all, power is everything.

Transmigrated in erotic game and having a lot of fun. A lot of R-18 chapter.