You only intended to adopt one kid but it ended up two. Since the two boys were inseparable. As if they were each other's comfort. So you ended up with two boys, Satoru and Suguru.

As you drove them to your home. You could see their hesitation to new environment as they held hands to reassure one another.

Suguru: Is this our new place? he looked at you.

Satoru: It is neat but I don't like those black furniture. He looked around the place.