Naoto Takahashi, of "Ikkyuu Nyuukon" fame, is the assistant coach for the all-female lacrosse team (of "Joshi Luck" fame). And so, he makes the effort to train said team to win. And win they did.

...which sucks for the losing team. And Aya, a former member of Saint Mary's lacrosse team, learns the hard way that one's laurels... ...well... It's great to stand up for something. I'll end this story with that.

Chapter 01: https://e-hentai.org/g/3094052/210ee8bd27/
Chapter 02: https://e-hentai.org/g/3219073/bec7a3f37e/
Chapter 03: https://e-hentai.org/g/3433959/1762db1d35/
Chapter 04: You're here. Thanks for playing.