ROYD-218 My colleague who has a boyfriend comes to stay over every day and unconsciously seduces me.

I lived alone near my company, and before I knew it, my apartment had become a hangout spot for my friends. One day, my friend brought his girlfriend over, and that's where I met Kana-san. While she was waiting for her friends, she started spending more time at my apartment, or sleeping in the same room with me. I couldn't make a move on her, but when she was asleep, I couldn't help myself and secretly masturbated... Then she woke up and gave me a blowjob! We were both sexually frustrated, so we went all the way...! From then on, we forgot about her boyfriend and had sex all the time. Kana-san said she'd do something about her boyfriend, but...