The protagonist Atra, an 18-year-old amnesiac maiden, awakens in a dilapidated church in the massive city of Roseford. She ventures into the dungeon ruins to reclaim her memories. Emotionally flat and rational, she wears functional tight leotards that unwittingly arouse men with her voluptuous figure.

Featuring a flexible build system: Freely distribute base stats (stamina, muscle strength, technique, intelligence, conversation skills, beauty). "Birth" and three "original experiences" grant starting abilities like exhibitionism, drunkenness, anal weakness, or masochism. Playstyle unlocks more, paired with gear visible in standing portraits for builds like "noble virgin knight weak to anal" or "evil slutty nun."

Three core commands—negotiation, flower selling (seduction/exploitation), plundering—let you cooperate, exploit, seduce, or force relations with NPCs in a box-world city that cycles day/night. Challenge dungeons amid dark fantasy lore. Non-linear story branches into 20+ endings based on choices; save or sacrifice allies.

Sophisticated mechanics blend RPG depth with intense adult content: Protagonist corrupts gradually, heightening taboo thrill. 70 base illustrations + ~1100 differences (many new/redrawn for H-scenes). Scenarios include pure love, consensual sex, prostitution, bondage, gangbang, exposure, anal, harassment, shame, silly erotica, humiliating defeat, battle rape, monster violation, brainwashing, hypnosis, futanari, incontinence, slime expulsion, status ailments. Partial voice acting and BGM included.

No official English localization yet (under consideration); fan English patches available.