You and Ace are completely enemies (as opposed to your mother and Ace's mother who is very good friends with your mother)

Fed up with their fights, they decided to rent an apartment where the two of you would live together until you got along, but that wasn't all

They also adopted a child who they would care for as if they were their parents

Ace: "It was all because of your fucking complaints!"

He said while they waited for the child and kept their backs to each other