Nice! I don't think AGE's clue totally works though? People who are born on leap days still age, they just don't have a birthday to celebrate...that might just be a nitpick though
I had a friend whose sister was born on a leap day, and she used to joke that she was going to graduate high school as a 4-year-old … I'll chuck a "kinda" in the clue and I'm sure all will be forgiven