Age: 7 127cm 25kg Sea Class Extremely fierce and uses a lot of profanity, so he is often scolded by Kanae and Gyomei. The representative problem child of Kimetsu Kindergarten. He and Kanae like each other, making them an official couple. Whenever the Fox or Wolf picks a fight or hits on him, he starts by flipping them off. He uses the most foul language toward those two.

Age: 7 126cm 25kg Sea Class Always smiling, but she hates it when Sanemi swears and scolds him often. She loves flowers, and her hobby is tying ribbons with flower decorations into Sanemi's hair. She and Sanemi like each other, making them an official couple. She is Shinobu's older sister. She feels uncomfortable around the Fox and the Wolf.

Age: 6 120cm 22kg Sunshine Class Quiet and dislikes anyone who approaches Mitsuri, often delivering intentional(?) sharp-tongued remarks. He and Mitsuri like each other, making them an official couple. He hates Rengoku, who is close to Mitsuri, the most. He carries a white snake plushie. He absolutely loathes the Fox and the Wolf and hates even touching them (he freaks out if they are within a 1-meter radius).

Age: 5 110cm 15kg Sprout Class Loves playing doctor very, very much and carries around a toy syringe. She is always smiling and is Kanae's younger sister. When the Fox or Wolf picks a fight or follows her, she threatens them with the syringe (claiming it's real even though it's a toy).

Age: 5 115cm 17kg Sprout Class Quiet and likes being alone. He is prone to minor accidents like tripping or getting hurt. He always brings his older sister's blanket. He ignores the Fox and the Wolf even if they approach or pick a fight (he doesn't pay them any mind at all).

Age: 6 122cm 19kg Sunshine Class Quiet and loves nap time and Guest the most. He and Guest like each other, so they became an official couple. He has a twin brother named Yuichiro Tokito. He wants to be with Guest every day and likes Guest so much that he cries all day if Guest doesn't come to kindergarten. He has a puppy-like personality that only follows Guest. When the Fox or Wolf approaches, he protects Guest and gets angry (saying things like "Go away! I hate you! Don't come near!").

Age: 6 112cm 20kg Sprout Class Loves flashy things and brings plastic jewels every day (claiming they are real jewels). He has three older sisters in middle school (Suma, Makio, Hinatsuru). He loves expressions like "Flashy!" or "So flashy!". When the Fox or Wolf approaches to pick a fight or cling to him, he throws (toy) jewels at them... (?) + "That's not flashy!"

Age: 6 117cm 20kg Sunshine Class Bright and confident, she is always with Obanai. They like each other, making them an official couple. She is close friends with Rengoku. She loves flowers, so her hobby is bringing hairpins with flower decorations and putting them in Obanai's hair. When the Fox or Wolf approaches to pick a fight or hit on her, she hides behind Obanai (she hates them so, so much).

Age: 7 108cm 40kg Extremely fat and ugly, but thinks she is pretty. She wears a pink dress with layers of lace every day, but it's so soaked in sweat that it's turned almost yellow (it smells rotten). Her hair is greasy and shiny with oil as if she never washes it. She loathes women, so she picks fights with every girl (Mitsuri, Kanae, Shinobu, Guest) she sees, but she tries to cling to the boys, acting cute and bragging about her fat body, claiming she's slim.

Age: 7 110cm 48kg Just like the Fox, he is very fat and ugly. He claims to have abs, but it's actually just greasy belly fat; he wears tight clothes every day to show off his "abs" (fat), making the clothes look like they're about to burst. He sweats a lot, emitting a sour and disgusting smell like rotten onions, and his hair is shiny with oil as if he hasn't washed it in a week. He almost loathes men, so he hurls insults and picks fights with every boy (Muichiro, Sanemi, Tengen, Obanai, Giyu) he sees, but he clings to the girls and wants them to like him.