http://www.mangago.zone/home/mangalist/631527/ this is a nice list too. It will tell you if they do have romance.
If anything, everything pre-academy arc is really good. I really did cry for the beginning after the end, it's just a shame that the love interest is the type that hits the mc and then wishes he likes them. Tsunderes are cute but That type is annoying. But the confirming of their relationship is Really endgame. Ofc they'll be lots of pining and jealousy and annoying behaviour on her side but it's wayyy down the story where he returns her feelings.
One pet peeve:
Also, he talks alot about how he's an old man in a boy's body, and he's always talking about how all the little girls around him are like little sisters, so it'll have no way he'll like them romantically... but he does anyway at the end of everything....
I want some recommendations on action/Adventure Webtoons that have a strong MALE lead, can be a comedy but not boring, and with really GOOD and thrilling SCENES/ART that just give you goosebumps and NO love interest or Zero romance.
I know it looks like I'm picky but I'll be thankful if you recommended me some of the best action/Adventure Webtoon. Has to be mostly webtoons but if there are any really good mangas then please do recommend me. Thank you again (≧∀≦)