One day, after finishing my part-time job, I had to spend the night with Mr. Igarashi, who is older than me and is my junior, due to a sudden heavy rain. I hadn't really been conscious of it until now, but seeing my soaking wet body made me nervous. When she found out I was a virgin, she gently asked me, "Shall I teach you how to have sex?" and we ended up having sex. Even after I realized she was a married woman, I couldn't resist when she asked me out again...
