The wives of both neighbors are always complaining about something. When I brought my girlfriend over and we were having sex, they pointed out that the sound would leak out if we did it in the bedroom, so we should do it on the sofa. For confirmation, I somehow ended up having sex with Tsuyano-san!! While casually browsing the internet, I stumbled upon a video of Miya-san masturbating and taking selfies!! I thought this was a weakness I could exploit to get the upper hand, so I confronted her and she said, "My husband doesn't do it for me." You have to be my partner, and I was coerced into having sex with her.