Currently reading ch 139 and I think they were both at fault. Junhyuk was too overprotective when it came to Yeonwoo when they were kids that yeonwoo had little to no sense of self after the play bullying incident.

I think if Yeonwoo and Junhyuk had some time apart as kids from time to time then Yeonwoo wouldn't be so dependent that he'd have a hard time existing or talking to Junhyuk when he actually needed help.

Junhyuk was so overprotective of Yeonwoo when they were kids that he accidentally caged himself in his own prison basically. He burnt himself out.

I honestly think if they had discovered themselves outside of their friendship as kids, Junhyuk would have noticed the bullying earlier, they would have been talking more often when they were in HS and Yeonwoo would've felt that instead of asking a hero to help him he was asking a friend for support instead.

But they're kids and in the end the system managed by adults failed them by protecting delinquent students too much.