The Heir of the Family was a Secretary?!

A guy named Keefe, who's the top priority of the story, was living in his own innocent and peaceful world, not until a grandpa who introduced himself as his Mother's Father, said that he was the heir of their family where he'll gonna grabbed one of the biggest company in the world. At first, Keefe didn't believe it cause his mother didn't even told about their grandfather nor grandmother. So that bought a mystery to Keefe. Meanwhile, Arth, Keefe's bestfriend and also BOSS, was hiding something about Keefe, aside from feelings but something, that's why Keefe was really dying to know the truth, so he set a journey for himself to find the secret of his family and the answers he's been longing for since he's a kid,

"THE TRUTH OF HIS PAST."