I will be talking about this in reference to my current webcomic Project SHaDe
For the longest time, probably one of the catalysts to starting this webcomic, was Ishida Sui's Tokyo Ghoul (specifically the first manga - :re is quite stylish, but it doesn't have the same gritty touch of the first one)
Lately, I've also been inspired by Jiro Matsumoto's artstyle, especially after reading Freesia
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May update this later, but these are the things that come to mind quickly as of now.