
You have to get the story. ML has this tendency of feeling and making himself the only MAN of mc's life, on whom he can depend on and find his solace like he finds in mc. He doesn’t wany anyone to come out revealing they know mc better than him. As u know ML and MC's family is fucked up. Which made it easier for ML. But Taegu's entrance makes it hard for ML. If Taegu was only showed as dependable adult then it would've been bland tbh. Bcause ML's character is extremely possessive. To show case that possessiveness far more better Taegu as 2nd ML makes the story far more appetizing in my opinion.

Well that is surely a better and acceptable way i can't lie. I think Taegu helped mc get back on his financial state(giving him work & all that) so making Taegu a high schooler wouldn’t make sense for that part and if they meet later mc probably been at devastating poor state or something. So, I also get why Author did what they did.
Uhu hu hu the last part!!! The author sure have a praiseworthy way of advancing a story.
We still haven't seen if taegu actually persued mc when he was a minor. Why is everyone so worked on their own hypothesis!!! And Taegu catching feelings for adult mc is nothing to be so worked up about. Taegu's presence is whats gonna make story spice up more tbh if you get ML's inner turmoil. Stop complaining every time Taegu shows up.
If you want bent your pedo anger then go under "Dawn of the Dragon" manga's comment section.