while fooling around with the encyclopedia mod, I discovered that the deleted had their own character entry with lots of sub-entries to explore. when I scrolled to the bottom of the unlocks entry though, i found this
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2795581510
apparently there are three 'ticks' for each character, one for completing their post-it note, one for a streak of 99+ (with the unique streak point system), and one for discovering a hidden easter egg with that character

im really curious because this seems to be the one of the few mentions of ticks in the mod, and i needed the encyclopedia mod to see this. is this some sort of unfinished feature? this mod is amazing as-is, but i just want to know what this is all about. im totally prepared to get all the ticks, but i'm terrible at easter egg hunting :(