The lock on his necklace actually functions.
I thought this might be a fun game; basically, look at the character of whoever is above you, and come up with a headcanon based on whatever impression that character gives you! Examples could be "i feel like they really like sour candies" or "they probably got bullied in school" etc etc, anything counts and nothing is invalid! Post IC, please! (Just so the person below you has a character to write about, but you don't have to actually write your post AS your character if u get me)
I'll get this started with one of my own. Another fun idea could be to edit your post to confirm whether or not the person below you was accurate!