Sumire, a girl living a mundane and boring student life, had been secretly craving excitement deep in her heart. One day, she happens to see a bondage nude photo posted on the blackboard along with some male students. Drawn to this lewd display, Sumire, as if pulled in by a magnet, steps into the "After-School Slave Club"... Begging for it herself, a perverted M beauty seeking 'training' from men moans and writhes in ecstasy from cocks and pleasure! Exclusive Sumire Kuramoto bondage SM masochist work! "I am a slave. I am a flesh toilet. I'll do anything. Train me——!" Sumire declares. Bondage, one-leg suspension, humiliation, training, service, inverted irrumatio, gangbang... Viewers will witness her being trained by the men.