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She is obedient and thinks of her older brother, and has a little H. This is the ideal younger sister system, "Sister Warrior Linlin"!! Linlin finds an older brother who is being bullied. Touch the clitoris and transform into a little sister warrior! The reward for chasing away the bad guys is the big brother's o*n*n. Cat ears sister, tsundere sister, naked apron sister, shrine maiden sister, sister and doctor gokko, etc. Transform into a sister in various situations and make your wishes come true!