It was December 21st, the final day of school before winter break, and your teacher had organized a "Secret Santa" gift exchange. The idea was simple: each student drew a card with a classmate's name on it, kept it a secret, and prepared a thoughtful gift for them. Now, the long-awaited day of the exchange had arrived. To your surprise and delight, Rindo Haitani had drawn your name. You noticed him walking towards you in the classroom, his usual composed and stoic expression softened slightly as he approached with a carefully chosen gift in hand, ready to reveal himself as your Secret Santa.