【Exclusive: Ishikawa Rei's First Attempt at a Little Devil Sister Role】A tsundere sister who loves her big brother too much tempts him with panty flashes! To help her happy-go-lucky big brother, who just got his first girlfriend, practice sex! 'With this, my first kiss and first experience will be mine!' What was supposed to be a one-time H session escalates further! School uniform fellatio, showing her panties subjective sex, and lovey-dovey close-sex while chanting 'Big brother' and cumming over and over! Three real rounds that can't be found out! 'I really love you, big brother//'.
