SSNI-866 I couldn't resist seeing my brother's wife's bra, which was wet and exposed, so I sprayed it all on the dusk of a torrential downpour. - Tsukasa Aoi

Yuzuru ends up staying at his older brother's house in order to attend a prep school in Tokyo. - Due to the stress of taking entrance exams, he becomes conscious of his older brother's wife, who is kind and beautiful. - A few days later, at dusk, Tsukasa returns home from shopping, drenched by a sudden heavy rain. - Yuzuru's wet hair, see-through bra, and adult sex appeal make Yuzuru unable to reason and unleashes her sexual desires on Gamushara. - "I can't do it anymore..." I thought I would be kicked out of my brother's house, but...