Tokyo: Rabbit Officer and Her Evil Partner - Chapter 5: Old Cases

Nagasawa crossed to Naruto Universe and was bound to Konohagakure.

If Konoha is severely damaged and destroyed, Nagasawa’s lifespan will be reduced.

He panicked at the thought of the upcoming Nine-Tailed Demon Fox’s attack , and the thought of Konoha getting destroyed left him in despair.

Fortunately, while bound to Konoha, he can obtain templates of powerful characters.

At the beginning, He got the Whitebeard template! Since it’s the Whitebeard from the Summit War of Marineford, he can use Tremor-Tremor Fruit’s ability and Haki.

Facing the Tailed Beast Ball, which terrorized Konoha Shinobi, Nagasawa leaped and shattered the Tailed Beast Ball with one punch!

- Description from Novelupdates

As one of the first players to gain access to World of Falan—the first immersive game worldwide—Roland creates his character as a Mage.

However, playing as a Mage is not as fun and easy as he thought. His head even explodes after he casts the very first spell in the game.

Stubbornly sticking to his class when most Mages decide to create a new character, Roland gradually discovers tricks of the trade and his unusual talent. This allows him to change people’s stereotypes on Mages and to explore the deeply-buried secrets of this game…

Lacking a pocket dimension, lacking a power, lacking a thigh to hug onto and the three life advantages (money, power, and looks), he had been cautiously living in the apocalypse for ten years, getting closer to falling inside the zombie’s mouths. But unexpectedly, he had the terrible luck, to be caught in a fight between two gangs and die, it really left people feeling disappointed.