Hey Shin-go, go get trained by your sister! "I'm currently living with my girlfriend Miyu on weekends, in a semi-cohabiting arrangement. One day, her sister Yuki suddenly started living at Miwa's place. Apparently he's studying hard because of his wife's affair. Ms. Yuki works at a personal gym, and thanks to Miwa's recommendation, I ended up training under semi-coercion. Muscular body, beautiful face right in front of me, and I'm rock hard. Ms. Yuki notices my excitement and keeps escalating the seductive training…
