The male protagonist is a time traveler, and the plot is a bit bloody. It is a story about a supporting character who gets together in a group of people. The protagonist likes to pretend to be low-key and pretend to be mushrooms. He has the same interests and hobbies as ordinary people. In addition, his golden finger was his hobby in his previous life.
I guess if I write this, I will get sprayed.
Also, this is a story about the male protagonist and his friends having fun together.