In Tokyo's famous Magic Mirror Bus, a group of schoolgirls on their field trip challenge each other to a game of baseball fists! If they win against the MC, they get prize money; but if they lose, they have to submit immediately. Two girls representing Shiga Prefecture, Miyu-chan and Hina-chan, step up to take the challenge. At first glance, they seem innocent, saying things like "If we win, we can buy lots of souvenirs!" But underneath that facade lies high intelligence—they even manage to handle perverted BLAD PADDLES skillfully while draining the MC's energy during punishment games. However, these girls aren't completely clean either; one of them has her T-shirt stuck so deep inside it doesn't matter! As the battle drags on, their idol-like bodies become increasingly aroused, leading up to an epic orgy at the end. They experience multiple creampies from large cocks, leaving them worried about getting pregnant by unknown men! Despite this wild game filled with squirting semen and juices staining their sailor uniforms, some might miss out due to different recording methods used depending on distribution channels.