Senka Sakuya from the prestigious Winhall Saint Sakura Academy. She is the student council president and is like a noble white lily that all students look up to with admiration.

But she had her secret. It's her exhibitionism, her tendency to get pleasure from showing off and being seen. Aroused by the aching in her body, her lewd exposure play escalates day by day as she attacks the brink of being found out or not being found out. She masturbates at her school, takes a late-night walk exposing herself, and finally engages in sex with her junior, who admires her. Even the voices of surprise and contempt from the people around her turn into stimulation that lights up her aphrodisiacs and she sinks into a bottomless pit of pleasure caused by shame.

"Now, let's go. To the abyss of lewd pleasure!"