Yagi

Matsuoka Rin is a retired Olympian who failed to win the medal he so longed for and has retreated in disgrace to become a coach at his hometown swim club. There, he meets the club's ace, 12-year-old Nanase Haruka, and decides to help Haruka realize his potential and do what Rin never could.

I was reborn as a Viscount's daughter, Cecil, in a very unexpected otome game where all of the love interests are Yanderes. However, Cecil, being the rival character in the game, was killed in every route by the chosen love interest. Furthermore, wishing to have a long life, Cecil meets Ashley who will be her servant and… he's one of the Yandere love interests…?!Original Novel