Rin is dating her boyfriend Wataru, a speed skater who values typography. Daikoku, who lives in the room opposite Rin's room, spies on her changing clothes and masturbates. One day, Daikoku can no longer control himself and finally ●●●s Rin! From then on, Rin is called in for various occasions and as she takes care of Daikoku's sexual desires, she becomes addicted to Daikoku's dick... She succumbs to the ruthless sexual intercourse and climaxes mercilessly! "Do whatever you want to me... play with me more violently." Her big-breasted, slender body is used as a sex slave and can be fucked as much as you want!