After school, as Miku heads home, she is suddenly attacked from behind and dragged into an abandoned building. Surprised by the unexpected assault, she is forcefully kissed, her lips violated against her will. Until now, she had only known gentle, tender kisses from classmates—this sudden deep kiss is far more lewd than she could imagine, and as her body is toyed with, she gradually succumbs to pleasure. Her reason slips away as she becomes entranced by the man's intense kissing. When he performs deep throat on her, she gags and drools, writhing in agonizing ecstasy. Her pussy pounded with fierce thrusts, she loses herself in pleasure, swallowing the man's saliva and cum, as the mature-faced girl shamelessly falls apart in a vulgar, post-school breakdown.