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Then there's haikyuu (its more sports than adventure actually)
And battle in 5 seconds after meeting. Tho i m not sure if this has romance. Read a few chaps and it seems cool.
Check these out and decide for yourself  ╮( ̄▽ ̄)╭                                            
 
																				
                                                 FANTASY • ACTION
list is a collection of manhwas that contain
 • action
 • male mc
 • little to no romance  http://www.mangago.zone/home/mangalist/612744/
Follow the list to be updated. And if you liked the manhwas I included, please do recommend. Enjoy~ (人 •ᴗ•)                                            

 
		
Can someone recommend an adventure manga or webtoon WITHOUT ROMANCE AND ANNOYING FEMALE CHARACTERS. thank you.