maja

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I haven't watched 'Weak hero' but if you're interested in an drama with former rivals forming a strong friendship (and no romance) I would recommend 'Oh no! Here comes trouble'. It's a entertaining and at the same time very emotional series.

Maybe Stealth Walker, it's a chinese drama with a similar setting. An undercover cop who infiltrates a drug ring to avange her parents death (also has some romance in it).

Just a theory but I suspect that the teacher was the real criminal who killed KSJ's daughter. KSJ probably knows this too and is now out to take revenge on the right person.
That's why the assemblywoman was so heavily involved in the proceedings at the time. She probably wanted to make sure that no suspicion fell on her son.
Also, I think that KSJ may be in connection with the doctor (JM's friend's grandmother) since KSJ saw a doctor in prison for his health problems. And in the pictures his daughter painted you can see a boy who, from the way she painted him, looks like he's about her age, which makes me think he's the grandson of the doctor (JM's friend).
Which also might add to another reason why he is watching the teacher.

But I'm only currently 4 episodes in, so who knows I might be way off.^^

You can find it on tapas

So in the end none of the guys had any chance because basically all women who were still in the game were money catcher. I honestly liked the reveal of the couple were both of them choose money over love the most. At least no one got their heart broken this way.

I've seen a few of Shin Se Kyungs dramas and in none of her roles she played was she convincing (personal opinion). Her facial expressions aren't really good in my opinion. Honestly I can't imagine her, replacing one of my favourite actresses, that's really disappointing. (>_<。)