[m] Not too long ago I read an one-shot, Mayonaka Sanpo, https://www.mangaupdates.com/series.html?id=153476, and I fel in love with it, so I was wondering, do anyone have some series that is kinda like it?
It doesn't seem that the author have anything other than Mayonaka Sanpo, if you have anything, it'll be a blessing

Watashi no namae wa Kira Yoshikage

https://kaiko-youmudou.jimdofree.com/book-goods/
their other works

You should probably explain why you like it/what exactly you're looking for. (The atmosphere? Similar characters?) As it is, it's hard to give any recommendations, especially for those who haven't read the story you mentioned.

That makes sense, sorry for not explaining.
So, I love the art style a lot, I also like the idea of having an "another world" in the same place with certain points and specifications. I also really like the cat character and how mysterious he is
I think that's it, i can't really say what i like so much in this oneshot, but i think this might be it, any other thing just ask

Watashi no namae wa Kira Yoshikage

So I took a look at it and it vaguely reminded me of something else (though I can't remember what), but some atmospherically similar things...

Anything by Mozou Crystal, particularly Spectral Wizard
Fujiwara Kamui's Orz and Love Sync Dream
Maybe some Tsubana? Especially, Mikake no Nijuusei or Wakusei Closet
Ashizuri Suizokukan perhaps.
Oh, and Kuro (Somato) and Creepy Cat for weird cats.

Also, very different atmospherically, but Kui Ryoko's stuff is usually also fun and quirky, especially her oneshot collections like Hikidashi ni Terrarium and Ryuu no Kawaii Nanatsu no Ko.

Seconding Kuro (Somato), also maybe 24-Ku no Hanakosan.