I wanted to post this bcuz Im kinda proud of it (+introducing my Korean kids show OCs)
so uhh this is the full page for reference btw (also sorry for the poor camera quality ;-;)
(yes I made all of them aroace and transgender wtf is wrong with me-)
(also they may or may not be kinda badly written ngl maybe that's why I hesitated to post abt them in the first place)
okay so uhh the first one's name is Meiji. Meiji is a 15 year old student who attends Sunshine High School (because I'd like to think this is an AU where there was a secondary school in Namsan since we only ever get to see the kindergarten/preschool in the entire series..look I didn't know what else to name the high school okay)
He's a closested trans man who looks and dress femme due to having transphobic parents (hence the long skirt, though, he does wear pants more often, so his parents also think he's a tomboy) it is a frequent passenger of Tayo since his stop (for the morning route) is the closest one to Meiji's house. They also draw in their sketchbook a lot and often will draw in school and on the bus. He is introverted and emotionally detached from his classmates and parents and tends to be very quiet.
This one is Kamakura, though her nickname is Kura. Kura is a 16 year old high school student attending Broomstown High (in an AU where there were other schools in Broomstown since we only get to see the elementary school in the entire series (and even then it only focuses on like the primary school grades and it's not like we ever get to see the students in the intermediate grades too, so it may as well just be a primary school instead of a standard elementary school) so same case with TTLB ;-;)
They're a trans girl but unlike Meiji, Kura chan actually does try to act and dress like their preferred gender, but isn't necessarily out as a *transgender* girl. She tends to stay indoors a lot when she's not in school, but may occasionally go out once in a while (especially when it rains) they're also kind of socially inept and awkward so they don't really talk to a lot of people. (And another self projection trait: She has a weird fascination with emergency alert systems and old PSAs)
The last one is named Muromachi (although called Muro for short) Muro is kind of different in a way from other watch car owners because it (yes it uses it/its pronouns) doesn't battle very much (and yet it's watch car has attacks) even it's own watch car works differently because it's attacks are influenced by whatever it's music taste is, so it's attacks would basically just be direct references to it's favorite VOCALOID/UTAU/SynthV songs (holy self projection ;-;)
Muro is also a 14 year old intersex enby (yes it attends middle school) Unlike Kura and Meiji, Muro regularly goes out, but it either is mostly just out to spectate on ongoing battles happening in the park or for going to karaoke. (Then again, even when it's outside, it usually prefers to not talk to people)
Also, I was thinking about it being a sibling of one of the main three characters (I say three because Maru already has a little sister (Maria or Marie i forgot what her name was but I know it was one of these)) but I'm not sure whether it'd be Jino, Roy, or Ari tbh..maybe it could even be a sibling of one of the supporting/side characters...yeah I have no idea ;w;