Aijo Rentaro - A romance monster crazy for his girlfriends.

Pros: Superhuman love for his girlfriends. Cons: Zero defense when his opponent is a girlfriend & perfectly normal in situations unrelated to them.

Brainwashed by the God of Infinity.

The God of 'Infinity'. He shares the same characteristics as the God—outfit, wings, and halo—but appears as a young man with a bare chest and braided hair. When Matsuri, visiting the festival at the Infinity Shrine, wished to 'keep enjoying the festival forever,' he brainwashed the Family (except Matsuri) to enjoy the festival infinitely. As a result, Shizuka, Kusuri, Rin, Iku, and Suu prioritize the festival over their respective passions: reading, drugs, violence, training, and numbers. Everyone's expression is fixed into a smile.

A foul-mouthed festival enthusiast and Gothic Lolita girl of British-Japanese descent.

Pros: A master of yakisoba & has a cool, easygoing, tomboyish personality. Cons: Rough in speech and behavior, lacking in etiquette.

An ultra-lightweight, doll-like literary girl who communicates via text-to-speech.

Pros: Adorable & has a deep love for literature. Cons: Speech impediment & disastrous physical abilities.

Brainwashed by the God of Infinity.

A troublemaking Chemistry Club vice-president who became an 8-year-old due to a drug side effect.

Pros: A pharmacological genius on a professional level. Cons: Most newly invented drugs cause problems.

Brainwashed by the God of Infinity.

Sutou Iku - A boyish masochist baseball girl.

Pros: Hardworking & a hot-blooded, indestructible force. Cons: Severe masochist.

Brainwashed by the God of Infinity.

Baio Rin - A refined young lady with a taste for cruel and violent things.

Pros: Extraordinary violin skills & a polite lady. Cons: Gets excited by all kinds of violent things.

Brainwashed by the God of Infinity.

Hifumi Suu - A girl who loves numbers dearly.

Pros: Deep affection for numbers. Cons: Indifferent to all concepts except numbers.

Brainwashed by the God of Infinity.