A Certain Magical Index: My Reincarnated Girlfriend(s)

The boy's name was 'Nanaya Kiryu', and he was a transmigrator.

His previous life's name no longer mattered.

In his past life, Nanaya Kiryu was in his early twenties, fairly average-looking, and had been an ordinary office worker for just a few years. He enjoyed watching various anime-related works in his spare time, though he wasn't quite an otaku—at least he never spent money on it. It was just a hobby, one of many possible hobbies. Why shouldn't someone be allowed to have anime as a hobby?

By a stroke of luck, after graduating, he found a decent job.

He was a planner at a small game company.

Other than not having a girlfriend, he had no real regrets.

Before transmigrating, Nanaya Kiryu was designing a game called 'Dimensional Gate', a game where players could travel to different dimensional worlds and have adventures. The company planned to use this game to test the waters... If the response was good, they would release it, if not, they would scrap it.

To meet his performance targets, he planned to work through the night to create a basic framework and then have his team help him the next day. Although he was just a planning manager at a small company, he still had a few people under him.

And then there was nothing.

He died suddenly at his computer desk without feeling a thing.

When he regained consciousness, he found himself a newborn baby, presumably a male child—otherwise, he would have cried.

After a moment of panic, he quickly understood his situation, he had either transmigrated or been reincarnated with his memories intact. He instinctively tried to speak but ended up crying loudly... Heaven help him, this wasn't his choice; it was purely the body's instinctive reaction as a baby, completely beyond his control.

Then a group of middle-aged people gathered around, pointing and commenting.

Strangely, he could understand their language, even though he had never learned it in his previous life!

Could this linguistic talent be innate?

Before he could figure it out, the people named him Nanaya Kiryu.

Nanaya??

One of the Four Great Exorcist Families, the Nanaya clan. How could he not know?

Could he have transmigrated to the Tsukihime world?

As a fan of Anime, Kiryu knew about this game. Given the surname Nanaya, it was highly likely that he had transmigrated to the Tsukihime world, which made him both excited and nervous—excited to be in an anime world he loved, nervous because the Nanaya clan would soon be annihilated, and he didn't know if that time was near.

Moreover, Tsukihime is part of the Type-Moon universe, filled with Dead Apostles, Executors, and various obsessive Mages and heroic spirits. This world was anything but friendly to ordinary people, with danger lurking everywhere, i.e the 'gas leaks'.

As Nanaya Kiryu worried, a mysterious voice echoed in his mind.

[Death count exceeds 9,999,999+]

[Awakening: Mystic Eyes of Death Perception...]

Died that many times?

That can't be right.

He'd only died once!

A bewildered Kiryu did not dwell on it long, his attention was drawn to the latter part of the message.

—Mystic Eyes of Death Perception?

His vision was immediately filled with countless lines and dots, densely packed. Everything around him, whether people or objects, had them. He had a feeling that if he traced these lines and dots, anything, living or dead, would be annihilated.

It seemed to be real, so this transmigration was worth it!

As Ryougi Shiki once said, "If it's alive, even if it's a god, I can kill it!"

As for Makihisa Tohno, cutting you into seventeen or eighteen pieces is a bargain for you.

The Nanaya clan lived in seclusion in Nanaya Village.

The Nanaya Village was essentially deep in the mountains.

...

Years passed, and Nanaya Kiryu finally grew out of his infant state, able to walk on his own. He began training in the Nanaya clan's martial arts. To survive better in this dangerous world unfriendly to ordinary people, Nanaya Kiryu trained desperately, mastering every move and technique of the Nanaya assassination arts to perfection...