A martyrdom training suite... A mother who sacrifices her body for her son—Oshima Yuka ROE-540

Yuka has an only son who will be starting high school this spring. Because she dotes on him so much, she's overly protective of him. But one day, she suddenly receives a call informing her that her son has been secretly filming… This scandal occurs just as her son has already received a recommendation for high school admission. Faced with Yuka's pleading, "For my child's sake…", the teachers offer a settlement: "Just for one day, you must serve the male teachers." For her beloved son's sake, Yuka has no choice but to comply. But unknowingly, she begins to awaken her masochistic tendencies (M-attributes)…