I really like Celestine! Idk why but he's honestly my favourite.
HE IS AN ANNOYING BRAT BUT A LOVABLE ANNOYING BRAT, especially because we as the readers (and writer!) get to see his own perspective of the situation through his narrative! He may seem exceedingly rude to everyone else, but to himself, he has good cause~
Also it’s just really fun reading/writing snarky dialogue.