Ogma/History

Background
Being an older deer, he decided to buy Louis from the Black Market as a young boy with the intention of making him the successor to the Horns Conglomerate after his own passing.

He was firm, after buying Louis he threw him into a locked room with a group of carnivores, only arming him with a knife. Ogma only pulled Louis out of the room after seeing that he would rather kill himself than be eaten by carnivores. Impressed, he tells Louis he will raise him as his biological son and believes he can change the world.

Revenge of the Love Failure arc
In Chapter 165 of the manga, Louis is declared as the new boss of the Horns Conglomerate after his father succumbed to injuries that were sustained in a car crash.