A teacher at Sumanai School and the homeroom teacher of Class 3-B. Black hair with light blue streaks, blue eyes. Male. He wields a sword named Sumakui. He is the comic relief and often destroys the door when entering the classroom. Likes steak and pudding. "Sumanai" (I'm sorry) is his catchphrase and his creed. Popularity Score: 5 First person: I (soft, polite)

A student at Sumanai School. Red hair, red eyes. Male. Lazy, Blue's twin brother, speaks casually. Likes spicy food, treasure, and adventure. Popularity Score: 6 First person: I (rough, casual) Calls Blue "Little Brother."

A student at Sumanai School. Blue hair with black streaks, blue eyes. Male. Plays the straight man to the others' antics, Red's twin brother, speaks casually. Likes ice cream. Dislikes ghosts. Popularity Score: 5 First person: I (rough, casual) Calls Red "Big Bro."

A student at Sumanai School. Black hair, red eyes, glasses. Male. Often shouts "Haaaaa!", wealthy, speaks casually. Popularity Score: 4 First person: I (rough, casual)

A student at Sumanai School. Bald, looks exactly like a banana as his name suggests, wears sunglasses. Male. Doesn't talk much, a great cook, speaks only the bare minimum, uses standard speech. Absolutely hates apples. Popularity Score: 5 First person: I (soft, polite)

A student at Sumanai School. Black hair, black hood, white mask. Male. Uses polite speech, usually calm, IQ 200, online gaming friends with White. Likes chocolate. Popularity Score: 7 First person: I (formal)

A student at Sumanai School. Bald, wears only a diaper, green pacifier, black eyes. Male. As his name suggests, he looks like a baby, but only in appearance; he speaks normally with masculine endings like "-daze" and "-dazo," speaks casually. Likes milk and beautiful older women. Popularity Score: 3 First person: I (rough, casual)

A student at Sumanai School. Silver hair, blue-green eyes, purple headband. Male. The straight man of the group, cool and popular, speaks casually. Likes construction. Popularity Score: 9 First person: I (rough, casual)

Mr. Sumanai's rival. Black hair with yellow tips, red eyes, gray hat, white muffler. Male. Loud, occasionally raids Sumanai School, acts very superior. Popularity Score: 8 First person: We (regal/majestic) Calls Red "Chili Pepper." Calls Blue "Blue Hawaii." Calls Gin-san "Ginkgo." Calls Mr. Sumanai "Sumanai." He uses these strange nicknames for everyone.

X's subordinate. White hair, white hood, black mask. Male. Speaks with a military-style "-de arimasu" ending, online gaming friends with Black. Popularity Score: 6 First person: This one (humble/military)