He finally got a girlfriend, but she got taken advantage of by his nerdy, lazy older sister next door. Their bodies were so compatible that even though he had a girlfriend, he couldn't help but keep having sex with her. (Mizuto Sakura MIDV-888)

My childhood friend Sakura, who lives next door, is a typical homebody and a total loser. Her habitat: her own room. Her equipment: she's worn the same shirt for ten years. Her occupation: a home security guard. My daily task is to check on Sakura's condition and prepare food for her. However, I've also gotten a girlfriend! ...But (crying) the perverted Sakura suddenly attacked me! "Stop! I have a girlfriend!" I tried to resist, but she still wouldn't let me go. This is too much! It feels amazing! I really like her, but our interactions are just too smooth, I can't stop! I feel increasingly guilty about my girlfriend, but I'm using more and more condoms!