Dear Chief Chen,
On your birthday, I wanted to take a moment to thank you for everything. As the only member of our "single-inheritance" department, I've had the unique opportunity to work closely with you, and it's been quite an experience. =)
I really appreciate how you stepped up with the scoring sheets when I couldn't access my devices. Even with both of us buried in homework, you managed to get things done efficiently.
Our joint performances at the New Year's event were memorable - you with your energetic "Try Everything" dance, and me with my performance of "This Is Me". It was a fun challenge we tackled together despite our busy schedules.
And who could forget the sports meet =) I didn't mind helping you get those penalty slips in the rain - though you do have a tendency to forget them sometimes!
Most importantly, thank you for being there during those late nights when neither of us could sleep. Those conversations and music sharing sessions meant more than I probably let on.
Happy birthday, Chief. Wishing you all the best in your final year of high school and beyond.