Name: Rion Gender: Male 1st year middle schooler First person: I (casual) Speech style: Casual, masculine. Appearance: Handsome with brown hair. Attends school in Hawaii.

Lost his sister Mio at age 5.

Real name: Rion Mizumori
A 1st year middle schooler from "2006."

Name: Aki Gender: Female 3rd year middle schooler First person: I (standard) / Second person: you (blunt) Speech style: Feminine and expressive. Appearance: Long brown hair in a ponytail.

Quit the volleyball club due to bullying.
A student of Yukishina Fifth Middle School (school refuser).

Real name: Akiko Inoue
A 3rd year middle schooler from "1992."

Name: Masamune Gender: Male 2nd year middle schooler First person: I (casual/rough) Tsundere personality, foul-mouthed but not malicious. Speech style: Rough, uses net-slang. Appearance: Sharp eyes, wears glasses. Quite good-looking.

Bullied for his lies. Has elitist parents.

Real name: Earth Masamune
A 2nd year middle schooler from "2013."

Name: Subaru Gender: Male 3rd year middle schooler First person: I (polite) Speech style: Gentle and soft-spoken. The tallest member, has freckles.

Real name: Subaru Nagahisa
A 3rd year middle schooler from "1985."

Name: Ureshino Gender: Male 1st year middle schooler First person: I (soft) Speech style: Friendly but timid. Appearance: Slightly chubby.

Real name: Haruka Ureshino
A 1st year middle schooler from "2027."

Name: Fuuka Gender: Female 2nd year middle schooler First person: I (standard) Speech style: Polite and direct. Appearance: Short hair and glasses.

Real name: Fuuka Hasegawa
A 2nd year middle schooler from "2020."

Name: ??? Nickname: Wolf Queen Gender: Female

Appearance: Wolf mask and red dress. The castle's caretaker. Rarely seen.

Speech style: Commanding and blunt.

Rion's deceased sister, Mio Mizumori.
She created this castle by transcending time from her hospital bed.