I'm the Tennis Club Manager, Not a Mafia Member

Hananohara Sakuichi woke up lying on a pile of ruins, with no memories.

The System told Sakuichi: Because the second playthrough restarted, you lost your memory.

Hananohara Sakuichi discovered that, unfortunately, not only was his memory malfunctioning, but his System was too.

The System panel read: [Both parents deceased. You are 12 years old this year, born in Yokohama, and have a little supernatural ability. What is your occupation?]

Watching tennis balls imbued with supernatural powers fly through the air, Hananohara Sakuichi confidently entered his answer: Tennis manager.

Is my next mission to lead Rikkai University to a third consecutive tennis championship?

Hananohara Sakuichi asked confidently, then worked tirelessly toward that goal. When Rikkai University stepped onto the podium to celebrate its third consecutive championship, his System finally returned to normal.

Hananohara Sakuichi looked at the occupation listed on his System panel: [Mafia]. A question mark appeared over his head.

Reader's Guide: 1. Third-person narration.

2. OOC warning, with plenty of original settings.

Core message: Study hard and make progress every day.