boots with the purr's feed

i never understand these korean comics that end the story only to post "side-stories" that ultimately have more chapters than the main story afaik side-stories are just to tie the story into a pretty bow not make it look like we missed something incredibly important in the plot. i love finding out about yvonne's 2nd pregnancy and i dont want the story to end but the fate of zachary's brother being in the side-stories is just beyond me