Ren = sakuraba + ryuu? Ren seems presented as what would it look like if Ashito had god-like technique. Since the author goes out of his way to highlight this fact i can't imagine technique'll ever be a thing for ashito. It would be nice if Ashito had his own unique weapon to fight against Ren...
kayden is so badass!! i hope he doesnt decide to leave jiwoo out of concern for him... but then again staying near him as a cat is also the best way to protect him so he wouldnt leave right?
honestly i dont think this is cheap or anything. Ragna had to use his full power which instantly alerted Kamui. the whole reason he didnt unleash his full power was so that kamui wouldnt insta teleport to him