Yes, he goes after rich people. He has a girlfriend who gives him everything (go back to chapters, can't remember exactly, but they're dinning when the girl gifts him a new car but he tells her he doesn't need one just to sound humble). The side-boy who he sleeps with (chapters before he picks haebom's ring) tells him whether he wants to be promoted into a different status thru his connections. And he had his eyes set for haebom but he change target when he found out Taehun's father was the president of the company they're working. He thinks eventually Taehun will take over the business so he's trying to 'win Tae over'.
So yeah, he's a golddigger.

HE'S MOVING!!!! HE'S STARTING HIS PLAN TO RUIN THEM!!!!! GOODNESS!!!
so um, is he u know, a gold digger???