In the swimming club where I serve as an advisor, there's a boy named Yuuki Yuurakutei who is particularly promising for the future. Concerned about his recent slump, I asked other team members and found out that he has a girlfriend and can only think about sex... He has the potential to represent Japan. As his advisor, I must guide him myself...【The industry's top beautiful muscles of Totsuki Ruisa in a seductive teacher work!】
