17 whole episodes just for background introduction story, I have no complain. for a deep serious story it should be that way.
almost every character is meaningful, the only problem is player role ambiguity. I assume flying boy is the mc since he is the one that has most character development through the story so far.

every character developed for the better or worse. main role, villains, even a support characters like the bully does.
at last a k-drama that gives a thoughtful love for their characters existed. let the original author do the drama writing really payoff.

last 3 episode rushed so much, many will think that still so much left out unsolved plot. moving might be planned to be multi season series, but there has to be a proper ending like episodes for this season. multi season or not last 3 episodes still bring a decent last battle vibes, pretty nice.

I'm surprised that I have no complains in the story progression or the characters, in the future k-drama webtoon adaptation really need to let the original author to do the writings or at least let them actively contribute in the writing process.

now moving to mainstream battle comic stories problem, power scaling. I'm a flipping geek, I cant believe myself talking about power scaling in a k-drama.
first of all, most op regeneration. this far regeneration means immortal, frank is still alive even after get burned yet gouged eye doesn't heal how far a wound can heal or not still uncertain.
another might be op power shown is time stop, only shown a little bit but if wanted to be shown later on this need to have certain limitation
then the induction power, in the ending shown a lightning strike. but power source of a bus definitely doesn't sufficient. a lightning strike carries at least 1 billion joules energy which needs several electrical bus energy to do that. lets say its not actually as powerful as natural thunder strike its just visual, in this series this power so far represented as the weakest when supposed to be the strongest. with proper power source bungaeman is basically a super human canon. a gun bullet speed is mach its already almost impossible to dodge, while electricity is speed of light nothing can escape that canon.

in summary, im pretty happy with this adaptation. I usually says that adaptation better to stick with the original webtoon as much as possible. but not this one, it doesnt matter this series is good enough as stand alone series. lets just hope disney will make season 2 happens