Kansen 2 (like the first episode) takes place during the initial outbreak of the Unknown virus epidemic, but the protagonists here have a much harder lot because they are stuck in the middle of a contaminated city immediately after its destruction by a mysterious cataclysm. Stalked by hordes of infected maniacs, Hiroshi Ookura and his friends seek safety inside a mostly intact shopping mall, but madness and death are everywhere…

Mao-kun is an ordinary high schooler-looking guy to the naked eye. What isn’t ordinary in him though, is his family. His mother died when he was little, and his dad raised him alone since then. Because of the lack of motherly love, Mao-kun slowly became scared of women, also known as gynophobia. Suddenly, his dad remarries and give the new mother permission to fulfill Mao-kun’s desire of motherly love—maybe a bit too much love.

Arata Asaoka lives with his despicable, chauvinist father and older brother. A house of three men.

Arata was an illegitimate child. Bearing only a tenuous blood relation to the man who bastarded him into the world, he was treated like a second-rate human. With nowhere else to go, Arata suffered the cruelty of his father and brother for years. For years, he forced a smile and pretended happiness for the sake of strangers… One day he met the girl who gave him hope. Her name was Koharu Hinomoto. She was a ray of sunshine. Being with Koharu made Arata feel good, and he fell deep in love. He began to believe that his life could be better.

Arata decided he would move out and live with her. Even without money, they could make it work. Anything was better than how he lived right now.

Arata knew in his heart that he could make a warm, loving family with Koharu.

If he could just move out… before his despicable family ruins everything.

In the heat of summer, a student who lives alone due to complicated circumstances with his family runs into a classmate at a convenience store. Her name is Shiinea Chieri, or Chii-chan, and she has large breasts, a nice figure, and is notably open about her sexuality and escapades. The chance of being with her seems slim… but then she smiles…

A cross over between the two hentai RIN×SEN and RAN→SEM. The story starts with Urara still being abused in the Kurodou institute. One day she is told by the headmaster that her fiancee, the one that set her with a great debt and only her body to pay for it, has been seen in the Believe lab. Luckyly, two lecturers at the lab, the Ichinose sisters Riko and Anna introduce Urara to the lab master, Majima. Then in a luxurious and grossly decorated room, Majima can’t stop licking his lips ogling the sexy Urara. He tells her she being chosen by god, and that she must enter the seminar to obtain answers. But, the seminar is a seminar in name only, nothing but free sex every day involving the poor Urara. One day Urara discovers the surprising reality from Riko’s mouth. The real name of her fiancee is Kaji, a lecturer in the Believe Lab. Furthermore, her senpai Asuka is also a participant in the lab. With a lascivious smile, Riko makes Urara jealous telling about Kaji having sex with Asuka. Urara walks into a playing room and sees Kaji and Asuka having sex. Urara screams in surprise and despair, in front of them she stutters back into a wall. With a misterious smile she finally breaks and murmurs ” Be… lie… ve…”.

Arisa and Mika Nanase are sisters and the school super-idols. They are the hottest and cutest girls in the school. Sousuke is a normal student who like the rest of the boys, can only look at the super-idol sisters from afar. Sousuke likes Arisa but can never hope to even speak with her. One day Mika tells him she want to speak with him after school. Later, he meets with Mika and Arisa and they reveal that they have now become siblings! The truth is that Sousuke’s father, an adventurer, and the Nanase sister’s mother, an archeologist, met at an excavating ruin in South America, fell in love, and married.

Mika, Arisa, and Sousuke are now siblings and will live under the same roof from now on. Sousuke now has to be careful to not get caught masturbating by Mika or Arisa …or maybe they might just give him a helping hand… How about taking a bath with Mika? …Siblings do bathe together after all…