Tennis, but with a Detective System

Odasaku died and lived again. But he is bound by a system that looks like tennis, which means he wants to play tennis here. Odasaku:… Odasaku, former killer:... Odasaku, former assassin, 26 years old, current mafia gang:... Is this right? The tennis ball floats in the air and says, don't worry, we won't let you work in vain. You see, there are no port mafia or armed detective agencies in this world. Let's let them join the embrace of tennis. Odasaku: Wait, Tennis didn't care about him at all, he was still beeping, beeping, floating, and continuing to talk, and although they are your friends, they are not in the same school at the moment, mainly because they are all in my card pool, so hurry up and experience the special junior high school time with them. Odasaku: Wait, Tennis is still beeping like a telegraph, and you can still get my help. Come on, let's draw the card first. Odasaku:… This tennis ball, can it understand human speech? Odasaku fell into an eerie silence. (The storage time of the brain hole is 2025.5.23, And the screenshots are self-stored) Purpose: Exercise for physical and mental health