Su Yu, the "number one pure maiden" of the clean-romance writing group, accidentally stumbles into an explicit reverse-harem dungeon and is forced to unlock all kinds of steamy scenarios with the male lead and supporting men. From the classroom to the woods, from her childhood friend's house to the teacher's office, she is repeatedly pulled into whirlpools of desire under the system's coercion. Her body is developed and trained again and again, yet she gradually sinks into forbidden pleasure. Facing the campus heartthrob's threats, her childhood friend's possessiveness, and her teacher's control, Su Yu struggles between shame and longing, never knowing when she can escape this endless dungeon of lust...