Based on the game by Crossnet-Pie.
On spring break, Daisuke is excited for his vacation on a tropical island for some well deserved relaxation and girl watching. He finds himself quite inexplicably popular with the ladies as well. Nao and Mitsugu follow him there as well competing, as usual, for his attentions. Meanwhile he meets his cousin Maya again after a long time as well as the wild Kanae and her friend Mika.
(Source: ANN)

Far away from the hustle and bustle of the city lies a small rural town in a mountainous region. A young man meets a pair of beautiful sisters there along with their mother, and lives together with them. Their days together are full of happiness, but he didn’t know that there is a hidden secret.

Story 1:
Having heard about a housewife passing down her late husband’s wealth to her daughter, two hoodlums invaded their home. After finding that the women did not have the money with them at the present time, the two men held the women hostage and used them to take care of their own personal sexual needs and desires.
Story 2:
A young woman accepts a job doing modeling poses for an art class. All was going well until the students demanded more out of the situation so exciting sexual encounters ensued.

Wakana and her much older husband attend a funeral. That night, she has a visit with Takashi – a younger man studying for his college entrance exams.

Hideya is visited by a cute little devil girl named Rima. She claimes she is called by him a month ago. Hideya demands her to be his slave.

Due to a mix-up, Shizumori’s underwear ends up being put into the wrong locker by a classmate after P.E. Shizumori now has to spend half the school day without wearing any underwear until she is finally able to return to the locker room. Once there, she’s surprised by Ozaki smelling her underwear. He gives her back her bra, but throws the rest on the ground. When Shizumori’s leans down to grab it, he makes a candid shot of her wearing no underwear. Armed with photo-evidence of her being an “exhibitionist” he blackmails Shizumori into having sex with him.

Based on the doujin by Sankaku Apron (doujin circle of Sanbun Kyouden).
Separate stories about sons witnessing their mothers gradually being taken over by lust and pleasure.

Feeble Shinichi feels affection towards his new stepsister, Megumi. However, he isn’t the only who fancies Megumi, for a delinquent duo desires something of her as well. Therefore Shinichi finds himself stealing Megumi’s panties and recording lewd footage of her for the bullies. Only to discover it isn’t enough…