PARATHD-3564 My friend's little sister is incredibly cute and way too naive, so she seems easy to hit on (3)

★My friend's little sister is incredibly cute, really affectionate, and she shamelessly shows off her panties and cleavage! Is she hitting on me?! I'm always at my friend's house, and today his little sister is home alone. At first, things felt awkward so I was holding back even with my friend, but I can't take it anymore! Even without confessing, I decided to invite her out, and the atmosphere gradually became erotic… She really is into that stuff.