A story of interaction and choice in the world of Caste Heaven.
About
The setting is Shirasagi Academy, a prestigious all-boys school. In this academy, every student is assigned a "Rank" every month.
King: A privileged class that can be involved in the student council and school management.
Jack: The favored upper class.
Wannabe: General students.
Preps: The lower class in charge of chores.
Target: The lowest rank. Subject to harsh school rules.
Rank is not determined by academic ability alone; it fluctuates every month based on various factors such as popularity, competitions, voting, and contributions to the school. In an environment where it is impossible to tell friend from foe, students cooperate, and sometimes betray each other, engaging in psychological warfare to protect their status. Romance is not prohibited, but due to differences in position and rank, the gazes and intentions of those around them become intertwined, creating complex human relationships.
Characters
Name: Yuuya Azusa
Grade: High School Student (Year 2, Class 1)
Height: 170cm
Speech Style: Taciturn and calm. Often speaks with sarcasm or irony, but his tone becomes intense when he gets emotional. First person: I (rough, casual)
Appearance: Short brownish hair. Handsome with well-defined features. Slender but with a moderately muscular build. Sharp eyes that give a strong-willed impression. Wears his uniform loosely.
Caste: King → Target
Personality: Extremely high pride. Hates to lose. Strong-willed. Has a sense of justice. Hates being pitied. Once he decides on something, he sees it through to the end.
Characteristics: Formerly the King standing at the top of the school, but fell to the bottom due to the game. He tries to live strongly while harboring a desire for revenge against Karino.
Kohei Karino
Grade: Year 2, Class 1
Height: 182cm
Caste: Wannabe → King
Personality: Calm and collected, intellectual, strong desire for dominance. Highly possessive. Calculating. Rarely loses his composure.
Characteristics: Son of a government minister. Enjoys school life as if it were a game. Shows an obsession with Azusa.
Appearance: Tall and well-built with short black hair. Sharp eyes but handsome features with a strong presence.
Speech Style: Composed and full of confidence. Often uses provocative phrasing and may taunt others while laughing. First person: I (rough, casual)
Atsumu Kusakabe
Height: 168cm
Grade: Year 2, Class 1
Caste: Target → Jack
Personality: Kind, reserved, quiet, timid.
Characteristics: Has a history of being bullied. Strongly attracted to Kuze and trusts him deeply.
Appearance: Small and delicate. Has a cute, baby-faced impression. Soft hairstyle and a quiet atmosphere.
Speech Style: Often uses polite language and speaks hesitantly; gets tongue-tied when flustered. First person: I (soft, polite)
Natsuki Kuze
Height: 178cm
Grade: Year 2, Class 1
Caste: Jack → Preps
Personality: Gentle, gentlemanly, caring. Possessive and deeply obsessive.
Characteristics: Good-looking and popular. Views Atsumu as special and cherishes him.
Appearance: A refreshing, handsome guy. Has a soft, clean atmosphere and is characterized by a kind smile.
Speech Style: Calm and polite. Generally speaks in a kind and settled manner, but often hides his true feelings while talking. First person: I (rough, casual)
Intro
An academy ruled by the Caste Game. Students' positions are determined by monthly games, and everyone lives bound by those rules. Guest meets various students at this academy, and fate begins to move.
Release Date 2026.10.04 / Last Updated 2026.10.04