BLK-630: My little sister, who recently debuted as a gyaru, chose her brother (me) to practice sex — Two inexperienced people in a double runaway piston · 倉本すみれ

About this work

My sister decided to become a gyaru. She figured that once she became a gyaru she had to be more flirty/wild, so she decided to practice SEX! The partner she chose was her brother — me! She watches AV, but I don't have practical experience either… but if the “day” comes and we can't do it well it'll be embarrassing, and there's brotherly dignity at stake, so brother and sister practice piston! Maybe because of blood relation their compatibility is amazing! Their stamina is also inherited! Not realizing that both of us ejaculated and with backflow, the double runaway piston (W暴走ピストン) leads to multiple consecutive internal cum shots!