What are your most/least favorite current or cancelled manga w/ <100 chapters?

I'm curious as to what we're reading and what we aren't. I was hoping for newer manga still being written, but older, prematurely-cancelled manga are also desired. Examples of my new current favorites are Astro Royale, Kagurabachi, Ichi the Witch, and Ultimate Exorcist Kiyoshi.

A cancelled favorite is the one where the kid teams up with the she-monster to kill the other monsters; I just can't remember what it was called. I thought the premise was derivative and the design of the she-monster very fan-service-y, of course, but the art was good and I was curious to see what the author would do with the kinda interesting premise. Another favorite is Psycho House, wherein people with "mutant abilities" are placed in specialized housing. Nice art, interesting powers, too slice-of-life for my taste, but fun.

Conversely, I'm looking for the worst-available manga on the Jump app you can think of. TBH, I'm new to manga, but I'm just looking for something stupid with this. It sounds like a good time.

Thank you to whoever reads or responds in advance.

E.T.A.: Cancelled manga examples.