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Somehow my sister-in-law quarreled with her boyfriend and ran away from home, but her daughter-in-law didn't go home because of overtime and she seems to be a serious brother-in-law. The cause of the quarrel seems to be sexless, and he is drunk and seduced by his sister-in-law, wondering if he is attractive. Even though I knew I shouldn't, I couldn't suppress my excitement because I was younger than my daughter-in-law and I was drowning in my sister-in-law's mako.