system
A chat on 4chan
human
>Spooky /x/ comfy manga
Shibito no Koe wo Kiku ga Yoi
Mieruko-chan
Itou Junji Kyoufu Manga Collection
My Roommate Isn't From This World
Sore wa rei no Shiwaza desu
Furyou Taimashi Reina
The Unpopular Mangaka and The Helpful Onryo-san
Eko Eko Azarak
Living With a Spirit
Chihone no Shanikusai
Sadako-san and Sadako-chan
Kako and the False Detective
Yajin
Okuru Kotoba
Kuchisake Nee-san
All of these are on Mangadex and are very comfy. Not all are fully translated yet though.
Crawling dreams, Nyarla & Ghast
Crawling City
Conspiracy research Club
 Shibito no Koe wo Kiku ga Yoi
Fuan no Tane
Zashiki Onna
Saiteihen no Otoko
Monkey Peak
Kuro Ihon
Humonculus
Ultra Heaven
Gamurakan
Fourteen
gpt
Thank you all a lot, this thread is very useful, lots of hours of entretainment ahead.

Also, to contribute to this thread, I'd personally recommend everything Suehiro Maruo has made (same author from Midori), since his manga is quite interesting. I also saw the Kazuo Umezu's movie and I can say his manga is truly something --definitely an inspiration reflected in all of Junji Ito's work.