I Shouldn't Touch My GF's Sister Like This

Kyouichi's recovering from an injury and his girlfriend is away all summer, so she asks her older sister to take care of him. As the naughty senior gives him a sponge bath, she notices him getting hard and jacks him off, then sucks his still-hard cock till he cums again! As she comes back day after day, she makes sure to take great care of Kyouichi, even wearing his girlfriend's stockings for a foot job, and eventually agrees to let him fuck her pussy and give her a nakadashi creampie! Although she was only going to take care of Kyouichi's needs till his GF returned, she can't stop craving his cock. And once he recovers, he shows her his full sexual stamina!