Hi everyone, I'm looking for mangas where the MC was a genius in the past, but suddenly quitted that and no one knows where he is right now, but in the present, he decides or is forced to join that again (somthing like a sport, actor/actress, musician, etc.).

Thank you everyone 😀 .

Here as far i remember.

Sports Manga
Area no Kishi
Inu Neko Jump!

Swordsmanship
Rurouni Kenshin

Music
Nodame Cantabile
Shigatsu wa Kimi no Uso

Acting/voice acting
Gunjou Reflection
Ikusaba Animation
Seishun Buta Yarou wa Bunny Girl Senpai no Yume o Minai

Others
Denpa Kyoushi

Be kind or get banned

Ao no Orchestra
Inu Neko Jump!
Iryuu - Team Medical Dragon
Kako and the False Detective
Kono Oto Tomare! (though it's the female protagonist whom this applies to)
RPG (Gaechaban)