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When I was a student, my brother brought her (Aika) to his parents' house and had sex in the next room. She's cute, charming, and has big breasts...I was jealous of my brother who had such a wonderful girlfriend. If you let me know that you're going to Tokyo on a business trip, I'll let you stay here. Aika-san, who met again after a long time, was puzzled by her unprotected, unguarded no bra appearance. Sexless with my brother who works overtime and comes home late... It's such a waste to be so attractive! Aika who is frustrated when she pushes down impulsively.