This is common in asia, in case you're unaware.
People with a lack of knowledge, experience or simply younger than a college student are often called immature, childish, inexperienced and treated like kids by right about anyone.
On Or Off did a great job displaying this in the early chapters: The MC was a college student that had his small company do their first job in collab with a big company, yet he was treated like a 'fetch boy' by everybody, not taken serious, made fun of, etc..
This is one of the culture differences in play you'll have to get used to when reading asian comics. Society is just like that over there. XD
Not gonna lie I don't even remember what this was in reference too lmfao. But I'm guessing it's a BL cause that all I read and the fact that he keeps referring to himself as a child cause it makes him sound like a kid dating a adult which will never be ok. But I guess for future reference this will be helpful cause I have read others lately where this happens a lot so thank you.
No problem, glad to be of help. ;D
That they keep calling him a adult or saying he wants to grow up soon like you're working how fucking old are you??? Stop calling yourself a child and him a adult it's weird (〜￣△￣)〜