Based on the erotic game by Frill.

After becoming the new Manager at the Baseball club, Saki-chan is trying to do the best for his club members. By accidentally throwing away the legacy of seniors in the club room which contained pornographic books and hentai videos, the members of the club were disappointed that they had no material to masturbate anymore to vent their desires. By compelled to account for it, Saki helps members to release their passions and overcome all the stress facing their members in order to win the regional Baseball game to get to the National.