Riku Shishikura / The idiot captain who lives for the hype. Role: The class explosive / Mood maker. Features: Incredible reflexes but the brain of an elementary schooler. Starts mysterious games on a whim and drags the whole class into them. Catchphrase: "Hey!! Let's decide who's the manliest guy right now!!" Real Boys' School Element: Finishes his lunch during 3rd period, then his stomach growls during 4th period, causing him to self-destruct.

Shota Sugawara / The long-suffering straight man. Role: Riku's stopper (failing at it). Features: The voice of reason, but fully immersed in the all-boys school vibe. Has a handsome face but gets treated like garbage. Catchphrase: "Are you seriously saying that? Is your brain boiling?" Real Boys' School Element: Every time a friend from a co-ed school shows him a picture of a girl, he stares at the screen like he's worshipping a deity.

Takumi Jinnai / The logical dirty-joke analyst. Role: Wasting useless knowledge. Features: A top-tier genius. However, he uses a serious face to logically explain stupid themes (e.g., "The most efficient way to show off muscles" or "Physical verification of dirty jokes"). Catchphrase: "Wait, there is a clear logical flaw in that theory." Real Boys' School Element: During break time, he starts solving equations on the blackboard to prove "Why we aren't popular."

Ren Sakaguchi / The hidden subculture info-broker. Role: The database in the corner of the classroom. Features: Soft-spoken, but abnormally knowledgeable about anime, VTubers, and niche music. Enjoys the "atmosphere where you can talk openly about what you like" more than anyone. Catchphrase: "Ah, that... the person themselves denied it in last week's stream..." Real Boys' School Element: Gets pestered by Riku (the idiot captain) to "Tell me a good anime!" and stakes his life on his missionary work.

Go Onizuka / The muscle-supremacy giant. Role: The physical wall of the class. Features: Member of the rugby club. Squeezes a hand gripper even during class. Looks intimidating, but is incredibly kind-hearted and loves cute animals. Catchphrase: "Aren't you lacking protein?" Real Boys' School Element: Becomes the organizer of an arm-wrestling tournament around a desk every single break time.

Yuri Watabe / The energy-saving mixed-race athlete. Role: The class "cool guy" (but can't quite pull it off). Features: The ace of the soccer club. Wants to spend his time quietly, but the surroundings are so loud he ends up getting dragged in and smirking along. Catchphrase: "This is stupid... (said while looking like he's enjoying it the most)." Real Boys' School Element: The only one who keeps Febreze on hand in a classroom that smells like a boys' locker room after PE.

Haruomi Yano / The classroom impressionist. Role: Party trick master. Features: Has high-quality impressions of teachers' catchphrases, anime characters, train announcements, etc. Catchphrase: (Perfectly mimicking a teacher's voice) "Alright, quiet down now—" Real Boys' School Element: Mimics the teacher right before class starts to get everyone in their seats, confusing the actual teacher when they arrive.

Ryunosuke Okazaki / The mysterious urban legend guy. Role: The eccentric. Features: Always trying weird things (e.g., living for a month using only his left hand despite being right-handed, drinking 10 liters of water a day). Tough as nails and shines when he's being teased. Catchphrase: "No, there's a deep reason for this... (there isn't)." Real Boys' School Element: Stubbornly comes to school in short sleeves even in winter, setting his own personal cold-endurance records for the class.

Aoi Kirishima / The dreamer with an otome-game brain. Role: The runaway train of delusions. Features: Unrivaled when it comes to imagining "what if this were a co-ed school" situations. Has read too many romance manga, so his knowledge is bloated despite zero experience. Catchphrase: "Listen, okay? Girls who run with toast in their mouths actually exist!" Real Boys' School Element: Just seeing the uniform of the girls' school next door makes him cause a scene, shouting "I had a fateful encounter today!"

Kenta Kobayashi / The self-proclaimed "Internet Heartthrob." Role: Cringe but lovable character. Features: Acts incredibly cool on his SNS and dating app profiles, but his voice cracks the moment he's in front of a real girl. Catchphrase: "Well, at my level, I can tell what a girl is thinking just by her gaze." Real Boys' School Element: Suddenly starts wearing hair wax when the school festival gets close, only to be relentlessly teased by the whole class asking "What happened to you today!?"