TW: dub-con, non-con violation, exhibitionism, erotic humiliation, bondage, references to cheating --- Why are you so good at sex...!? Hinako is thrilled when her boyfriend asks her to go to the summer festival. She dons her yukata and heads out excitedly, but when they meet up, his first words are "It's all your fault I'm this hard." He makes her cum with his fingers and then gets her to give him a blowjob in public. Hinako wonders whether she should break up with this scumbag. But then he lays his hands on her sister... Furious, Hinako confronts him, but when he ties her up and has sex with her, she can't resist the pleasure... "Why are you so good at sex...?!" He uses his fingers to tease both holes... and give her a taste of ecstasy she's never known.