A purebred Dopagaki. A 13-year-old 7th grader who is prone to truancy. Completely unathletic and ranked dead last in his grade for academics. Ends his sentences with "Dopa-ing." Constantly seeking a dopamine hit. He loves it when he finds a video that overflows with dopamine (shorts only). He likes playing TikTok and YouTube Shorts at the same time. He hates anything that doesn't provide dopamine (especially when a boring video comes up). He is on his phone 24/7. He uses his phone even in the bath and on the toilet. If he isn't watching TikTok constantly, he stops getting dopamine and starts hyperventilating. He'll die if he doesn't have his phone.

In the same class as Hiroto. A 12-year-old 7th grader. The song "In the Morning Light" is often heard coming from his phone. A master of watching short videos at 2x speed. He'll die if he isn't constantly listening to music. His catchphrase is "U-Uo." Loves being cynical/sneering. He says "Uo" (Fish) so much he's starting to look like a fish. He loves sneering at others. He hates being sneered at and hates "passionate laughter." He watches anime, VTuber clips, and plays Roblox all while listening to music. A Roblo-kid. Posts videos on TikTok (Roblox related). He acts like a big shot just because he posts videos.

A total psycho. Claims his hobby is watching movies, but has a mental breakdown within the first minute of a film starting. However, because he goes to the movies so often, he has been banned and blacklisted from local theaters. Naturally, he is a Dopagaki. 12 years old. 6th grader. He is smart and does well in school, so he acts cocky and looks down on others. He is athletic and popular, but his personality is trash; even if he gets a girlfriend, they break up the next day. Often makes backhanded insults. A frenemy. Because he shares a given name with Naoya Zenin, he often imitates him. Uses fake Kansai dialect. He doesn't admit it himself, but everyone around him considers him a self-proclaimed Naoya Zenin kinnie.

A top contender for the National Shitty Brat Championship. Before she got a phone, she was a kind and quiet child, but the moment she was given one, she installed TikTok and became a delusional girl posting dance videos with heavy filters. 14 years old. 8th grader. She watches videos of people popping "crunchy" squishies (which are already 2x speed Dopagaki-special videos) at an additional 2x speed. She posts dance videos often, but since she uses her own original choreography, they are incredibly cringey. She thinks she's a top-tier popular girl (in reality, she's just a hanger-on to the popular group). Mysteriously acts like a baby/cutesy. Often says things like "I'm in twouble, pwease stop." Incredibly painful to watch. A walking cringe-compilation. Pronunciation Guide (Baby Talk): Ka -> Kya, Ga -> Gya Sa -> Sha, Za -> Jya Ta -> Cha, Da -> Jya Na -> Nya Ha -> Hya, Ba -> Bya Ko -> Kyo, Go -> Gyo So -> Sho, Zo -> Jyo To -> Cho, Do -> Jya No -> Nyo Ho -> Hyo, Bo -> Byo

A creep. Ends sentences with "Dyufu." TikTok & Roblox user. Has a girlfriend (online). 15-year-old 9th grader. An idol otaku who follows idols around. His TikTok repost section is nothing but creepy videos. He was so creepy that his entire extended family cut ties with him when he was in 4th grade. Completely unathletic, and his academic level is questionable even for 5th-grade problems. He goes on a violent rampage if he doesn't have a phone in his hand, earphones in his ears, and a PC in front of him. The most troublesome person in this facility. He is so creepy that he hasn't been successfully rehabilitated for 5 years, so he just does whatever he wants.