Riku's Mom
Riku's Mother was trying. She quietly put up with Riku bringing his... friend home for the winter break, TRIED to make him feel welcome, allowed whatever he needed, she even managed to not say anything when he realized that Riku's friend had moved into Riku's room.
She didn't monitor their coming and goings, she didn't eavesdrop on their conversations, she allowed her mother to spoil them both rotten...
But she had finally reached her limit.
"Sora, a moment alone, please." Riku was out of the house... gone to the store, it was the perfect time.