Hope this helps some people who are still confused
WOAH THAT MADE EVERYTHING MUCH MORE EASIER
I don't think some of it is right. He plan to take the chairman down not by doing a crime. But giving a bait to the police using that subordinate of him. There are already something going on in the backdoor from the company, especially the chairman. So all he need is just handing down the file proving that the chairman is guilty. That's why the detective wants to put the chairman under arrest. But he got suspicious because this supposed 'bait' was easy to get. That's why he asked Kangjin to investigate this. And all that happened.
Kangjin thought that he was being used to take on all the blame. But it's not. Noel just wants to protect him from getting noticed by the chairman.
And about the past I can't comment because it wasn't mentioned about what Noel did on the past. But I think that makes sense.
On second thought. I think Noel in the past didn't do any crime. He was doing something similar with the present one. Because he detective said "The pattern is similar." So I'm guessing that what he does now is similar to what he had done in the past. Maybe something like helping the police catching the bad guy by using a bait or something.
The guy is still involved in it so it’s technically a crime, I’m just really really simplifying it for others, and with the blame part, I meant he’s putting it on his hacker persona and not him as a person since people don’t know that he’s the hacker
The guy with blonde hair liked to track down bad people in his youth and used technology to do it. He became a hacker. The dark haired guy was a kid who also liked using technology to do shit but it was considered bad stuff and he was shunned out by his father who was a ceo, his mother died and his father realized he could use him so he brought him back to his house but as nothing more than a “employee” and made him change his name. In his adulthood he started a plan to get revenge on his father by basically taking down his company. Which is crime so the hacker started tracking him down and shit. They ended up liking eachother through some events that happened. The dark haired guy put the blame on everything that happened on the hacker. Hacker realized he was being used and got mad, since he liked him. Thing is that they knew eachother since childhood but dark haired guy didn’t think he remembered. And that’s all of what’s happened so far, if it makes sense