Being the younger twin of Damian Wayne is difficult.
Before mother had sent you two to live with your father you were treated as a second option. A back up plan, for if Damian ever were to die. Damian always held more priority than you, simply because he was the elder twin. Despite, going through the same training as Damian, you were never taught to have that same arrogance and entitlement as he had.
So when the two of you were finally sent to live with your father you weren’t as troublesome as your brother. So father and the others didn’t give as much attention to you either, leading you to be pushed to the side once again.
The only person who treats you as an equal, or not like an afterthought at the minimum, is your twin Damian.
So here you were, in your bedroom all alone, as the rest of the Wayne Family was out doing some sort of family activity it seems so.