Yuki-kun is a particularly promising member of the swimming club where I serve as the advisor. Worried about his slump, I interviewed the other members and found out he has a girlfriend and is always thinking about sex... He has the potential to become a member of the Japanese national team. As the advisor, I must provide him with guidance... [A female teacher seduction work featuring the flesh-bomb sex of Ruisa Tsukizuki, who has the most beautiful muscles in the industry!]