my brother is my onnapet, tsukuda 3. ayachan, miyazaki aya

Aya-chan, a pretty girl who resembles an eyebrow idol, has a ronin (masterless samurai) older brother who always stays at home and looks into the place where she is masturbating in the bathroom or taking her boyfriend in to see what's going on. One day, I found Aya-chan sneaking into her room, and it seems that she was forced by her sister like a daily routine to live in a jealousy. my sister's naked brother and a lowlevel younger sister... i have this brother and this sister!