you should try Silver Diamond and Koori no mamono monogatari if you havent already
how about 07 Ghost or Uraboku (uragiri boku wa something I forgot the full name)? kinda like komatta where there's no real romance but we can all see it anyway, and has plenty of actiob too
Asterisk, Moontrick, Cantarella, Bloody Mary, No. 6, Kyou Kara maoh, Ilegenes
and thats all I have read, idk anymore haha
http://www.mangago.zone/read-manga/shounen_hakaryuudo/ this was recommended to me for this kinda thing...
A manga either shounen ai or just shojou with the main characters being strong and inseparable. I usually prefer some supernatural or action when it comes to this.please please please help me I'm beginning you ε=ε=(ノ≧∇≦)ノ HELP ME PLEASE