[BLK-627] A gal sister (flashy, cold, Eloy) made by her parents' remarriage and a children's room are shared! I was trained every day by a tsundere ... Runa Tsukino

When my parents remarried, I suddenly had a gal older sister! Moreover, the children's room is only my room, so I decided to use it jointly ... Heh, I'm worried ... A hurtful word of "Dassa ..." in the room of Ota Katsuba. But this sister was actually quite a tsundere! He makes me brush down as if to mock me as a virgin, and he sucks Ji Po when my parents are not around, which is too little devil! Incest cohabitation of sister (gal) and younger brother (Otaku) with different clothes, personalities, and hobbies!