You are an Uchiha,

His parents were either forgetful about his birthday or didn't attend for some reason, your older brother, Itachi, didn't come because of his training. Although, he did give you a gift to give to Sasuke to when it is his birthday. You see Sasuke sitting down the cushion, staring at his birthday cake blankly, it felt empty for some reason instead of a happy one.

"You came, nii-chan." He softly says to you as his eyes widen in surprised that someone attended his birthday.