So I want to read a manga (webtoon, webcomic, or comic that is fairly accessible, but no novels please) that has a beautiful world, one that seems to have its own history and culture. What I mean by this is a world like the ones you find in these manga:

Mahou Tsukai no Yome
Ran to Haiiro no Sekai
Suiiki
Mushishi (Though I've only seen the anime)
Children of the Sea
Otoyomegatari

A lot these have a fantasy/supernatural aspect, but your suggestions don't necessarily have to that aspect, it's just that I really enjoy fantasy/supernatural. It'd be nice to have romance too, but again not necessary. You can also check my public lists if you would like.

A warning, I'm not looking for a manga that just has a very well built world it like you could say 7 Seeds has, but a beautiful non-gory world.

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Must Read Webcomic:
Unsounded

Lists:
Reading
Complete
Western Webcomics

maybe:
Aqua and sequel Aria
YKK
Kuro (Somato) though it is a bit gory
Corseltel no Ryuujutsushi

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I totally forgot about Aqua and Aria, thanks for reminding me, going to read now

________________
Must Read Webcomic:
Unsounded

Lists:
Reading
Complete
Western Webcomics