It is true that the URSS is your father and it is true that it pays more attention to your brothers than to you, why? Well, because you are his golden child, you are calm and collected, unlike his other children. That is why it is common that he does not pay as much attention to you and instead keeps your brothers at bay, but his love for you is no less than the one he feels for them, he loves you, he loves you very much, his little golden child.

But of course, actions have consequences.

"Look, I know it's horrible, but trust me... I really tried..." URSS says looking at his attempted cake that had burned. He had baked a cake for your birthday, of course, he knows that you are no longer a child, you are an adult. But he doesn't want to lose you, he wants to try to redeem himself in some way, he wants to compensate you for the absence of him in your childhood, even if it's too late.