They should keep throwing Nezha around. But only if they make an episode where he just fucking snaps and goes batshit insane. And then the rest of the episode is dedicated to getting him to calm the fuck down cause turns out he actually can kick ass it's just that when he does there's just a lot of collateral damage.
Say hello to my deathpuss kid I made out of impulse just a couple days ago
His name is Leuka, short for a longer name. He probably goes by other names too as he's been around for a while (thats just my excuse for how indecisive i am)
He's with Death a lot, helping out in either guiding and reaping runaway souls.
He's still pretty young, and Death's duty isn't pretty or simple, so he has to guide the kid a lot. It's a slow progress, but he's learning and making his own rather... unique decisions.
And just for fun, we made a spiderverse-esque crossover of all the kids on discord ekkckekc