A guy who thinks he is mature is rejuvenated in another world, and he is heading towards the best future.
After Sun Ya's rebirth, he became Akashi Yaya. With the brother he dreamed of and a family that never had to worry about money, the miracle of a beautiful life like a dream came true, and he was finally able to travel back to his youth.
The cp is Oikawa Toru, the deputy cp is Akashi Seijuro x Atobe Keigo, those who don't accept it should beware.
Intention: another possibility