leehan my man

But that kid an elf tho so they might be closer in age(?)

While typical in most fantasy, we haven't had a confirmation on how ages work with different races in this world. Plus, there's also the thing that age going up in number doesn't equal maturity (a bit ironic to say considering my comment lol), but I mainly mean this with different races. Ie. If I remember right, typically elves mature slower than humans, which equals growing up - so an elf at age x is pretty much the same in maturity as a human that has lived much less than that in years. (I've never played an elf in dnd and mostly played in homebrew worlds so I may be misremembering what the actual rules are for them typically - I just remember that half-elves mature somewhat similarly to humans until adulthood, but afterwards age slower as they live older.)

Nah mature or not. People have pride that's where the childishness comes in. Most adults are petty af making them childish just like my mom when you don't buy her flowers on valentines (brought her a new vase).