PARATHD-4258 My friend's little sister is super cute and way too easy to take advantage of, so I should be able to fuck her (6)

◆I have a girl I'm interested in.The girl is super cute, tsundere, and defenselessly shows off her panties and breasts.But there's one problem...it's that Rina is my friend's younger sister.◆I was initially reluctant to be friends, but I can't stand it anymore.●Invites Rina-chan, who is completely unprotected and spoiled, and creates a body relationship!?I'm not satisfied with having sex while stealing my friend's eyes, and I'm not satisfied with that or something like that in front of my sleeping friend...