Youtsuba&!
Yeah, this just looks like some cliched Kowai manga, but its not, or at least not just that. Kiyohiko Azuma shot to fame with the four panel highschool manga Azumanga Daioh, which relied heavily on prosaic situations, subtle characterisation and leftfield humour, and Yotsuba is in same vein, but vastly wider in scope.
Our protagonist is a young girl, orphaned (we think) and non-Japanese, and the comic is simply her moving in to a new neighbourhood with her adopted father, discovering things, going on adventures and generally being very innocent and ridiculous. Deceptively simple, but like most great Japanese art, brimming with sincerity. If you 'get' it you'll find it outrageously hilarious and oddly calming, if not then it's just a nice bit of escapism.
One of my top 5 favourite comics of all time.
Read (First 31 chapters, great quality):
https://bilingualmanga.com/manga/yotsubato
And the rest (with crappier lettering):
https://m.manganelo.com/manga-xe90898
Buy:
https://www.bookdepository.com/search?searchTerm=Yotsuba&!&search=Find+book
EDIT - new images and link coming soon.