It isnt really "shonen" . But it just got "that feel" you know what i mean?? It's hard to explain. It's different than your typical yaoi. These authors have a really distinctive artstyle. If not very simplistic, its very stylized... Yknow, it's just those kind of BL where you dont mind any plot as long as the delivery, the atmosphere and the vibe is good. well, at least in my opinion.
Unique and unusual BL's
This list is in order from my most favourite to my least favourite
In this list I try to collect all less romance manga and were is girl having good grips fight
Fighter girl
Underage fighter girl
Expression less
Swordship
Untouchable character
Psychology
Killing or thriller
Revenge
Justice
More powerful than man
Martial art
Boxing
Physically powerful
Reverse Harem
Kninght
Black and white
Colorful manga
Solo
Fantasy
Action
romance
Yuri
Comedy
Isekai
PART 2
https://www.mangago.me/home/mangalist/1936925/