in my opinion, I think it's nice that his breaking his body every fight because I think that without the challenge it would be boring and since jiwoo is still growing, it's kinda part of the process
I mean our boy only has speeds, his body can't physically handle stronger attacks [even using his own attacks sometimes hurt him] and ppl obviously always use bigger attacks on him to enable his speed which he can't always dodge.
this is where pluton comes in cause as you can see from the past chapters pluton is the one that take notice of his body capabilities but we can't just have him easily overcoming his weakness when he's literally battling villains and more experience awakeners than he does
*sighs* I wonder how looong til we get to see him fight without him breaking his body first? it's been 200+ chaps already and it's being repetitive now?