The mc came from a wealthy family with just his father, older and younger brother present. All of the siblings came from different mothers. The mc was not close with his older brother and he was used/became a stepping stone of his younger brother. The younger brother had a butler but that butler was a brother of the younger brother's mother, he was just pretending to be a butler to protect his nephew, and the butler in reality is very wealthy. When the mc was reborn he chooses to stay away from home and became a very successful programmer. He chooses to give up his family (he stopped caring). Later on, the butler became in love with the mc then they had a relationship and the butler started to see the true personality of his nephew so he became strict with him and slowly stopped caring. In the original story, the younger brother was the one successful (but he had an awful personality) but after the rebirth, this did not happen.