 If you liked
Annarasumanara
|
 ...then you might like
Sayonara Sorcier
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A good looking guy in a black suit and a hat atop his head, is shrouded in semi-mystery. He doesn't live his life by society's rules, and you only get to know of his true intentions (and by extension, his character) towards the end of the manga/manhwa.
Both the works are from different genres that treat their subjects in a semi-dramatic way, but if you enjoy mysterious guys with little backstories, then you're sure to enjoy this recommendation.