Moe Sato is a young lady who finds a cat and starts taking care of him. Named Poyo due to his round shape, he quickly becomes a dear member of the Sato family. (Source: ANN)

Tooru Kouno's attractive appearance draws unexpected attention on his first day at an all-boys school. Having to transfer to a school without girls has been bad enough, but adding to his list of frustrations are boys staring at him all day long. However, he hopes that there may be girls around, since he ran into a lovely pink-haired girl on campus earlier that day. After being escorted to his dorm by his classmate, Yuujirou Shihoudani, he meets a student named Mikoto Yutaka, who looks eerily similar to the girl he saw previously. To his shock, he realizes Mikoto is the girl and confronts him about this revelation. Yuujirou divulges that he and Mikoto crossdress as part of their job: a school tradition in which attractive first years are chosen as idols called Princesses in order to boost the morale of the students—and because of his looks, Tooru has been chosen by the student council as their third Princess!

Abandoned by their abusive parents and with only each other to depend on, siblings Utsutsu and Yume Hasegawa find themselves led astray by beautiful red butterflies that have appeared in their world. Unbeknownst to them, these crimson winged heralds trumpet the beginning of a cannibalistic nightmare—a mysterious virus known as Pupa is about to hatch. After succumbing to the full effects of Pupa, Yume undergoes a grotesque metamorphosis into a monstrous creature with an insatiable desire for flesh; Utsutsu, on the other hand, is only partially affected, gaining remarkable regenerative powers instead. Reaffirming the resolve to keep the promise he made to himself years ago, Utsutsu is willing to sacrifice everything in order to always be there for his precious little sister. Pupa tells the story of a loving brother's desperate struggles to save his sister while protecting the world from her uncontrollable hunger.

Fifty years ago, malevolent stones known as Dark Brings brought about the Overdrive, a calamitous event that destroyed one-tenth of the world. In the present day, the nefarious organization Demon Card seeks the Dark Brings' power for their all but innocent intentions. Haru Glory, a sword-wielding silver-haired teenager, inherits the title of Rave Master: the person who wields the power of the legendary Rave Stones, artifacts capable of destroying the Dark Brings. However, the many Rave Stones were scattered across the globe as a result of the Overdrive, allowing Demon Card to continue their malpractices. Groove Adventure Rave follows Haru, his strange dog Plue, the fiery blonde Ellie, and the infamous thief Musica, as they embark on a great journey that will take them around the vast world, searching for the Rave Stones that will finally end Demon Card's injustice.