The Crossword puzzle is a new inclusion in Persona 5 Royal and a fairly simple one at that. One simply needs to check the leftmost table in Cafe Leblanc periodically for an orange pamphlet ...
The promotional image for the Persona 5 Royal and Persona 5: The Phantom X Sweets Paradise cafe shows ten characters in total. From Royal, we have: Joker, Morgana, Ryuji, Ann, and Yusuke.