Socially anxious me could only find a job at a black company, and I was stuck in a negative spiral of 'work mistake → overtime → drinking → sleep deprivation → work mistake.' As I was drinking as usual, Tsukasa-san, the beautiful married neighbor, came in from the entrance... 'Huh? Why are you here? Well, whatever, want to drink together?' Maybe she got drunk and mistakenly came into my room, and she gulped down my alcohol. For some reason, we ended up drinking together and she listened to my troubles. When she found out I was a virgin, she smirked and straddled me...