I’m a Delinquent in Japan

Reborn as a delinquent in Japan, Serizawa Takumi is determined to make the most of his foreknowledge and make a name for himself.

But just as he gets used to this world with its oddly skewed tech tree, he discovers that demons, evil spirits, strange entities, and even more ancient beings are beginning to reawaken through a game that lets people grow stronger in real life.