IPZZ-597 A secret between me and Kana-chan, to be taken to the grave. My best friend's girlfriend's unguarded bare face was too cute, so I impulsively slept with her that night. That night in question. Momonogi Kana

…Even with just one person, the doorbell to my cramped room rang. Who could it be at this hour? When I opened the door, there stood a familiar face of a woman. Her name is Kana. We’ve been friends since our student days; she’s the girlfriend of my best friend. …“Let me in.” Rudely and without much explanation, she entered the house. Apparently, he had a fight with someone and left home. He changed into his room clothes, bought cheap booze and cup ramen. 'It's like we're back in college. Thanks for listening to me.' Slightly drunk, she leans against me. Slim shoulders, defenseless cleavage, a moment that strongly made me aware of her as a woman. "...bath!" I managed to push Kana away for a moment. But this was a bad move to destroy my sense of ethics. With her bare face, the scent of her usual shampoo wafting from her beautiful hair… "...hey. "Can't sleep?" She asks, lying in bed with her back to me. ─If there is a god, I hope he forgives my selfishness. In my drowsiness, I reach out my hand towards the defenseless her―