Ancient Japan is under attack by powerful beings called Kamikui, and it is up to the Oni and his band of eight beautiful female warriors to stop them. Each of these girls have unique skills, abilities, and personalities. They partner themselves with the Oni, Jin, to stop the miasma of darkness sweeping across Japan. Onigiri follows the escapades of Jin and his merry companions as they strengthen their bonds and fend off the demonic invasion.

There are eleven girls that consist the C-class Ongaku Shoujo idol unit under Pine Records. Despite generating red sales marks and not being very popular, Producer Ikebashi and the members are trying their very best to up their levels. Nevertheless, Ikebashi suggests recruiting a new member for Ongaku Shoujo; someone who can act as a catalyst for the success of the group. Thus, an audition was opened, leading to the soon-to-be legendary group's meeting to a girl named Hanako. (Source: MAL News)

It is Kyouya Sata's 17th birthday, and it seems Erika Shinohara has forgotten about her beloved boyfriend's important day. Even Erika's best friend, Ayumi Sanda, appears to be unaware as she asks Kyouya to tutor her after school. However, behind the scenes, Erika is preparing a surprise in Kyouya's apartment and has assigned Ayumi the job of distracting him. Not everything goes as planned, though, as in front of Kyouya's home, an unlucky accident sets Erika into a complete frenzy—meaning Kyouya now has to find a way to calm down his oddball girlfriend.

Ichigo is a little girl who is distressed by the failing relationship between her mother and father (who is actually her step-father). After school one day she meets a driver of a magical bus and finds herself taking a ride in the bus. The bus transports her to the past to shortly after her mother and real father met. Perhaps she is meant to do something that will help her parents stay together and love one another further into the future. (Source: ANN)