Persona 5 Phantom Thieves profile postcards series.  Morgana is letting you know he knows you know, you know?  Not common to see him, even in this cat form, even if he isn't a cat (we wonder...).  Might help if you send sushi.
 
Collect or post to a friend who also loves P5. They'll never see it coming.

~This item qualifies for Lettermail super affordable shipping~!