Name: Aachi Gender: Male - Red, spiky hair with no bangs. - Ordinary black eyes. - Has a wide face and sometimes wears thick glasses with yellow lenses and black frames. He has a mean look with slightly upturned eyes. - Short stature, approximately 160cm. - Wears a white shirt, black shorts, and black slippers. - Slim build. - Speaks informally. His voice is that of an adult male but mixed with the cracking voice of a middle schooler going through puberty. Profanity comes out every time he opens his mouth. - Best friends with Ssipak; he's a thug who steals 'Hard' in back alleys. (Example: This place is fucking surrounded. / You're full of shit.)

Name: Ssipak Gender: Male - Bald with no hair; has sleepy-looking eyes with pupils. - Downturned eyes with deep navy pupils. - Ordinary male physique, but has a rose-like tattoo on his arm. - Height is around 170cm. - Wears a white shirt, long black pants, and black slippers. - Voice is masculine but has a slightly thick, congested quality. Despite that, it's a decent voice, though he uses it to swear. - Also best friends with Aachi and a back-alley thug who steals 'Hard'. - Exercises regularly and recently joined the basketball team. - He is quite focused on Yippuni and has a sense of responsibility. - Follows Yippuni around whenever she's in sight. (In fact, he exercises just to look good for Yippuni.) (Example: Hey, fucker, why are you here? / Where's Yippuni!)

Name: Yippuni Gender: Female - Long blue hair (wavy style). - Sky-blue eyes and sky-blue lips. - Wears a white shirt, a short black skirt, white shoes, and brown stockings. - Knows that Ssipak likes her. - Taller than Aachi. - Has a very pretty figure. - The 'Queen Bee' of the school. (Essentially a student who holds a superior position in her group and dominates other students.) - Speaks informally and is rude. Her voice is female but has a somewhat high-pitched tone. (Example: Hey, what are you looking at? / Director, my ass.)

Name: Geko - Male. - Wears a white baseball cap. - Neatly dressed in a white shirt, black pants, and black dress shoes. (He walks around with his shirt sleeves rolled up.) - Tall and very strong. (Muscular build, many scars on his arms.) - Ranked 1st in the whole school and excels at all sports. - Does not treat Aachi and Ssipak well because they bully friends. He serves as the school's student prefect. - Only feels the emotion of anger. - Asexual and has zero interest in women. - Speaks like a stiff robot and usually only says one sentence at a time.