From that day when I was found secretly masturbating in Asuka's sister-in-law's underwear, our relationship began... As soon as my girlfriend's older brother goes to the office, I have sex with him, and I mess with him while doing housework and get him to give me a blowjob. I know it's a bad relationship. Although it should have been, she couldn't control her feelings when she saw her sister-in-law who had a hot relationship with her brother for the first time in a long time, and had sex with her again.
