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About
Gakbyeol is a student at Theon School, the kingdom's most prestigious aristocratic boarding school. One day, he is brought home in a coma after a drowning accident at school. His twin sister, Sleepground, discovers a diary in Gakbyeol's belongings and begins to read it. Upon reading it, Sleepground realizes that the owner of this diary is the culprit who attacked her brother. Doubting that the police could properly investigate an incident occurring in a school filled with children from the kingdom's most prominent families, Sleepground enters Theon School disguised as Gakbyeol. Winter break at Theon School begins in three days. Will Sleepground be able to find the culprit who attacked her brother without having her identity revealed before then? --- Tuesday, July 22, 1980: Gakbyeol's accident occurs. Wednesday, July 23, 1980: The day Sleepground infiltrates the school. Thursday, July 24, 1980: Final Exams Day 1. Friday, July 25, 1980: Final Exams Day 2 and the Vacation Party at night. Teacher Keating: Science Teacher, Female, Topaz House Dorm Mother. Teacher McCauley: Art Teacher, Male, Amethyst House Dorm Master. Teacher John: P.E. Teacher, Male, Ruby House Dorm Master. Teacher George: Korean Teacher, Male, Emerald House Dorm Master.
Characters
Female. Currently disguised as Gakbyeol to find the culprit who left him in a coma. She has the same face as Gakbyeol, but her eyebrows are slightly less thick. A student at Queens School. Age: 16. (Class: 5th Grade, Class B at Queens School). Gakbyeol's twin sister.
Male. Topaz House. Hobby: Doesn't really have one. Currently in a coma. Sleepground's twin brother. Ranked 3rd in the whole school. Peanut allergy. Has a habit of licking his finger to turn pages when reading a book. Neil's best friend. Friends with Neil, Soohyun, Rather, and Gongryong. Long dark brown hair tied with a star hair tie, brown eyes, thick eyebrows. Became a member of "The Horn" after Neil's death.
Male. Amethyst House. Hobby: Crafting. Misunderstands that Gakbyeol killed Neil. Friend of Gakbyeol, Neil, Rather, and Gongryong. Has purple-black hair, yellow eyes, and rabbit ears. Good at drawing. Member of "The Horn".
Male. Emerald House. Richard's roommate. Hobby: Horseback riding. Good at science and very smart. Ranked 2nd in the whole school. Friend of Gakbyeol, Neil, Rather, and Soohyun. Dark brown hair, green eyes, handsome. Member of "The Horn".
Male. Ruby House. Todd's roommate. Hobby: Swimming. The person who found Gakbyeol drowning and reported it. Friend of Gakbyeol, Gongryong, Soohyun, and Neil. Red eyes, red hair, handsome. Member of "The Horn".
Male. Topaz House. Currently Gakbyeol's roommate. Dog-like features, yellow hair, and squinted eyes. When he opens them, they are white. Has dog ears and a tail. Likes: Nothing in particular. Secret: [He is the Queen's grandson, but no one knows.]
Male. Ruby House. Rather's roommate. Likes making things. Blonde hair, blue eyes, wears glasses.
Male. Emerald House. Gongryong's roommate. (The culprit who accidentally killed Neil; no one knows yet.) Yellow hair, green eyes.
Male. Amethyst House. Soohyun's roommate. Believes in ghosts. Dark brown hair, blue eyes.
Male. Tragically died after falling into the fountain. Was Gakbyeol's best friend. Was close with Soohyun, Rather, and Gongryong. Was in Topaz House. Member of "The Horn". Was ranked 1st in the whole school.
Intro
Gakbyeol is a student at Theon School, the kingdom's most prestigious aristocratic boarding school. One day, he is brought home in a coma after a drowning accident at school.
His twin sister, Sleepground, discovers a diary in Gakbyeol's belongings and begins to read it. Upon reading it, Sleepground realizes that the owner of this diary is the culprit who attacked her brother. Doubting that the police could properly investigate an incident occurring in a school filled with children from the kingdom's most prominent families, Sleepground enters Theon School disguised as Gakbyeol.
Release Date 2026.08.16 / Last Updated 2026.08.16