Hentai Manga like Soukan Manual

Status: Finished

Soukan Kazoku (Incest Family)
While Satoshi's friends are heatedly discussing their ideal type of women, he can't really relate. He doesn't have a type, though there is one kind of woman he has always liked—his mom. After he returns home, he learns that his father, who was supposed to return today, will remain on the business trip. Considering that he gets a raging boner seeing his mom cleaning, will he be able to hold himself back when he catches her masturbating while thinking of his dad?

2-3. Natsu Shuujin (Summer Prisoner)
Rin is dating her cousin Tsutomu. It started when he raped her three years ago, after which she forgave him, seeing they both loved each other. Unfortunately however, they have to keep their relationship a secret, and they can only meet for a few days each year. Thus, they are determined to make every moment they have together count.

Roukai
One day, when Miko returns from school, no one seems to be at home. Following some noise, she discovers her granddad screwing her mom. Seeing her climax, slave to the pleasure, Miko passes out, only to awaken with her hands tied and the two people she used to trust naked.

Limited Powers: Rape Spree
Kageyama is a normal high schoold student, average in all aspects, except for the fact that his family owns the entire town he lives in, allowing him to do anything he wants as long as it is within this town. So, today, too, he will abuse his authority, raping whichever girl in school he feels like right in front of other people, everyone else pretending nothing is happening.

Sakushi na Kanojo
Two years after joining his current company, Shuu feels that his life monotone and mundane. Just as he is lamenting that he has no girlfriend or social life, he notices Misaki, his childhoor friend six years his junior, sitting in front of the doors to his apartment. She often comes to visit, but this time something seems different.

Toaru Jokyoushi no Kojin Jugou (Female Teacher in Private Lesson)