Doomsday from the Start: I Am Subject Zero

First of all, the male protagonist has no temper and indulges the fox. Just because the fox is stupid and cute, he takes the initiative to owe the fox a lot of debt. Gee, is this the end of the world and does it still need to be stupid?

Yes, the protagonist starts out as an ordinary person and suddenly becomes stronger. There is no change in mentality. Normal, there should be changes later.

Well enough. .