Rin is dating Wataru, a speed skater who prioritizes stamina. Across from her room lives Onda, who has a clear view and has been getting off by peeking at her changing and such. One day, Onda couldn't hold back any longer and finally took Rin! From then on, Rin was repeatedly called out to satisfy Onda's sexual desires, and she gradually became addicted to Onda's cock... She succumbed to the ruthless sex and reached a ruthless climax! "Make me yours... Play with me more intensely." Her big-breasted, slender body is relentlessly fucked and becomes a sex slave!