2014

Soccer player Hayasaki Ryoushirou returns home with a sports injury. When his four older sisters find little sister fetish material in his luggage, the only possibly therapy for his unacceptable (and non-existent) lolicon fetish is sex with his busty older sisters Yuri and Mio.

2010

This dude Yoshiyuki loves to work out. He also loves sex, cause he's not dead. Now that he's a teacher at an all-girls school, he gets to combine his two favorite things. He decides to give his struggling students some private tuition, AKA, his dick - cause that certainly won't be hard to grasp.