This Isn't an E*otic Game? - Chapter 24: I Want to Cry, Damn It

Gawain is dead and was transmigrated, but there was a slight problem during the process.
After floating for more than a hundred thousand years on a different continent, he felt that he might need a body to become a complete transmigrator, but he did not expect that…

- Description from Novelupdates

“You really want me to save people?”

Looking at the shivering victim in front of him,

Look at the [Owl’s Head Wire], [The Murderer’s Gift], [Universal Anesthetic], [Invisible Potion] in the item column…

Shiraishi touched the hideous mask on his face and fell into deep thought.

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“The Salary Thief in the Distillery”

“What does the vest do to me have anything to do with it?”

“There are limits to being a human being, I choose to be a cat…”

The magic version of Conan

- Description from novelbuddy

The MC transmigrates to the Narutoverse in the body of an orphan boy from the Senju clan, as a normal person from modern Earth he has little to no fighting experience, but luckily time is something he has a lot as Naruto is just 6 months old so, he can slowly build his strength to live a “Peace-full” life

The world was once at war with 10 alternate worlds. This was known as the Concept War and our world won 60 years ago. All of this was concealed so no normal people are aware of this fact in the current time.

After the death of his grandfather, the high-school student Sayama Mikoto is suddenly summoned by the giant corporation IAI. He learns this world is headed for destruction due to the acceleration of the Minus Concepts. To prevent this, negotiations must be undertaken with the survivors of the other parallel worlds so their 10 concepts can be released.

And so Sayama is caught up in the final battle to clean up after the Concept War which left behind so much enmity.