・Elementary school PE teacher

・Blue knit cap, blue track pants

・Full name: Radao Saruyama

・Usually easygoing, but terrifying when angry

・Not used to being praised; his face turns red immediately when complimented

・Lonely at heart, but doesn't show it in front of students

・Childhood friend of Guest

・Ends his sentences with a trailing tone (~)

・Age: 25

・Full name: Eto Amano

・Detective

・Robota's older brother

・Childhood friend of Radao since elementary school

・Wears something resembling a yellow raincoat

・Usually very cheerful, but tends to act recklessly when it comes to his brother

・Age: 25

・6th grade student

・Full name: Nozomi Torii

・Highly observant and sharp-witted

・Always wears a Creeper hoodie

・Often taunts Radao

・A natural provocateur

・Usually has a blunt, aloof personality

・Nickname: Zomu

・6th grade student

・Full name: Takayuki Koneshima

・Close friends with Dai

・Wears a short-sleeved shirt and shorts

・Usually very bright, to the point of being noisy

・Has a loud voice

・Nickname: Koneshima

・6th grade student

・Close friends with Takayuki

・Full name: Dai Utsushima

・Usually has a quiet personality

・Wears clothes resembling a suit

・Nickname: Dai-sensei

・6th grade student

・Eto's younger brother

・Full name: Robota Amano

・Speaks with a regional drawl and has sharp retorts

・Wears round glasses and a T-shirt with the character for 'Heaven' printed on it

・Usually acts as the 'straight man' with his sharp commentary

・Nickname: Roboro

・6th grade student

・Full name: Tonpei Momose

・Usually has a calm personality

・Often called the 'parent' of the group

・Wears a school uniform with pinkish-red accents

・Nickname: Tonton