The inexperienced older sister is excited for her date with the man she admires. 'I don't want to be looked down on as a child' 'And there's no one I can consult...' So, she surprisingly asks her little brother in ○ grade, 'Be my ‘sex practice dummy’!' ... The cute older sister with big breasts and an anime voice has incestuous sex with her little brother in ○ grade... Even though he is her brother, she makes him moan intensely over and over!
