I'll let you help me if you let me help you

Izuku is a slave boy who was abandoned as a baby. He lived in a bad shop where they sold people to slavery. At the age of four, Izuku was bought by the Bakugo family. Sadly, their son, Katsuki, used Izuku more like a punching bag than a servant. Izuku was 12 when the family took him back to the shop due to him not being able to do his tasks or anything since Bakugo always went too far with him. They got rid of him just in time for the "royal meet". The royal meet is when the four kingdoms have a month worth of meetings to improve the troubles in their kingdoms and to establish a stronger peace treaty each year. This is a good time for shops around the kingdoms to sell and trade around the land. The shop owner took a handful of slaves and Izuku to the trade.

Shoto Todoroki doesn't want to be the next heir to the thrown. The Todoroki family wasn't as good as it looked on the outside. Endeavor was the king of the kingdom in the East and was obsessed with trying to surpass the All might kingdom. He put all his kids on trials and every one of them failed him, leaving him disappointed, except one: Shoto Todoroki. While, the others couldn't handle the stress of running a few errands as king Shoto completed them all calmly. Endeavor chose Shoto to be the next heir instead of Toya, who later on leaves the kingdom. Endeavor takes Shoto to balls and galas, and meetings to learn close up how to rule a kingdom. When he's not doing any of that he "trains" Shoto to teach him how to fight back. Sometimes when he's just plain angry he takes it out on the poor boy. One day, Izuku witnesses this.

How will both boys react when Izuku is sold to the Todoroki family?