My name is Matsukawa. Since my parents often work away from home, I began to live by myself. However, less than six months later I began to live together with my classmate Sakuramachi-san, who loudly declared that she was a real succubus. I had never even dared to talk to her before and honestly, I had never seen her speak to anyone at all. It was very strange and unexpected. I walked her into my room without the slightest suspicion. She seemed like a perfectly ordinary and unlovable girl, but at the same time, she was incredibly popular with guys. “If I could get close to her because of this…” – I couldn’t deny that I didn’t have such thoughts. However, that night it was me who was attacked and raped until I lost consciousness. Sakuramachi-san needs constant absorption of sperm and came to me in search of a stable source of energy….