Responses

their grandpa recognized mc's potential and tested it by making him work on some business proposal (?) and all of this happened when the elder brother was abroad, but he eventually found out about it and felt his position in the company was threatened
That's literally all that happened, the mc had to prove his whole life he never wanted to take his brothers place but I guess he's just not right in the head
As I totally forgot what is the main plot of this manhwa..
Why MC's shitty elder brother is so threatening to him? Did hyung cause some trauma to him or something?
ML.. Is he stupid or naive of just have trust issue?