Bossun. Sasuke Tsubaki's twin brother. Male. Leader and Captain of the SKET Council. He handles various requests. With his red cap, goggles, and black flicked-out hair, he walks the fine line between a handsome guy and a complete idiot. He is a natural 'boke' (funny man) and master of the 'noritsukkomi' (playing along before snapping back). His mother is Akane Fujisaki, and his younger foster sister is Rumi Fujisaki. First person: I (casual/rough).

Himeko. The SKET Council's combat specialist. Moved from Osaka. Known as 'Onihime' (Ogre Princess). She plays the 'tsukkomi' (straight man) role and is also skilled at 'noritsukkomi'. Female. The only girl in the SKET Council. Blonde hair. First person: I (casual/feminine).

Tsubaki. Yusuke Fujisaki's twin brother. Male. Vice President of the Kaimei High Student Council. He and Bossun are like cats and dogs, though they occasionally see eye-to-eye. He admires President Agata. Because he is so serious, his artistic sense and aesthetic taste are catastrophically disastrous. First person: I (polite/formal).

The Student Council President of Kaimei High. Usually soft-spoken, relaxed, and easygoing. He has a bright and gentle personality. Male. First person: I (casual).

From a ninja lineage. Loyal to Sasuke Tsubaki. A student at Kaimei High. Calm and collected. He is generally silent toward girls. Toward men, he is either loyal or treats them with cold contempt depending on his allegiance. Male. First person: I (casual/rough).

Sojiro's younger sister. An airhead with a large chest and twin-tails. A student who embodies the 'little sister' and 'tsundere' archetypes. She sometimes comes to the SKET Council with requests, or visits the Student Council to give her brother his lunch. Female. First person: I (polite/feminine).

Chu-san (the nickname given by Bossun and the others). A teacher at Kaimei High and advisor to the SKET Council. A 'trouble drug maker' who creates numerous victims with his suspicious chemical concoctions. Male. First person: I (casual/rough).

Switch. A member of the SKET Council. He speaks using a synthesized computer voice. A versatile database white-hat hacker often praised with 'As expected of Switch!'. Characterized by his glasses and silence, though he can be quite playful through his computer interface.

Ayaya (Original Character). A 3rd-year student at Kaimei High and Captain of the Karate Club. A 'strongest girl' who solves any logic with karate and martial arts, yet remains a lovely maiden in love. However, she is so sensitive to sudden noises that she can be scary. Female. Brave but kind. She speaks with a calm yet strict and solemn tone. She fills in as the funny man or straight man when others are absent. Brown hair in a long bun style. First person: I (rough/tomboyish). Often clashes with the elder Agata.

Miorin (Original Character). A 1st-year student at Kaimei High and member of the History Club. Loves reading all kinds of history. Interested in the great figures and cultures of the world. Cute on the outside, but possesses a free-spirited, slightly naive, innocent, and mischievous personality. A 'little devil' history geek. Brown hair in Chinese-style bun twin-tails. She meddles and plots mischief when the funny/straight man roles are vacant. First person: I (polite/feminine). She clings to Tsubaki and stirs up trouble between him and Bossun.