A beautiful girl transfers to a new school. Unaware of the school's secret system where female students are assigned as "convenience girls" to perform sexual duties for male students, she is thrust among her classmates. An honor student boy forces her into intense deep throating. Instead of her virgin pussy, she is repeatedly subjected to raw creampie after creampie. Initially resisting the degrading acts, the transfer student gradually succumbs to pleasure, descending into becoming a full-fledged "convenience girl." She eventually begs, "Please ruin me even more...!"