Tempted by the naughty bodies of his beautiful stepdaughters and unable to withstand his growing cravings, Atsuki creates a powerful aphrodisiac spray. Utilizing it, Atsuki coerces Airi into a scandalous relationship. Through debauchery and pleasure, the two explore a rather tumultuous relationship that snowballs to engulf other innocent girls.

Airi keeps her relation with her father but he treats her as an object sometimes which makes her angry. One day while watching a movie she gets assaulted giving start to an affair with one of her school's teachers.

Continuing after the events of Oni Chichi: Re-Birth... Airi, Marina, and their step father, Takami, leave for a trip to a hot springs resort. But Marina makes last minute plans and just the two of them go. Takami still constantly tries to drug Airi.

The latest series of the Airi storyline finds the three main characters adjusting to their current setting of an open adult relationship. The setting is completely disturbed when Airi and Marina's mother, Kayako, returns and seeks to "rebuild" her relationship with the stepfather, unaware of him having sexual relations with her two daughters. Also the stepfather is becoming more and more abusive to Airi who has been challenging their relationship with another young lady.

Join Airi, Sana and her dad as they take a trip to the beach.

The family holiday didn't quite live up to Airi Akizuki's expectations. Her stepfather, Kouzou Akizuki, decided to take her on a weekend trip to a ski resort—after all, nothing brings a family closer than shedding some sweat under the crisp winter sky. However, as it soon turns out, Airi is not the most skillful skier out there. Moreover, as the wind picks up and a snowstorm looms on the horizon, the pair finds themselves trapped in a chilly cavern. They are losing heat at a frightening pace, but there is one activity that will keep them warm for sure.