STARS-549 4 Years Spent Day In And Day Out In Adultery With A Wife And Child Demon Coach! A Track And Field Club Girl Who Aims To Be The World's No.1 And A Naughty Physical Mating Mahiro Yui

Oki appears as a new coach for the track and field club of a certain private university. Oki was a demon coach who imposes strict training. The club members had no choice but to obey such a large tree, even though they were dissatisfied. Meanwhile, Oki is enthusiastic about teaching Yui, who practices more than anyone else. The relationship of trust between the two eventually develops into a romantic relationship. Aiming for national domination, while doing special training with a three-legged team ….