That is the visitor perk. The more you take care of your own and others Ryus, the more it’ll increase the chance to unlock that perk! In order to have a visitor once unlocked, you must have added that user to your friends list on cK, and you must both select each other as your Ryu’s visitor.
For example, my visitor is @
(you need an account to see links), so she selected “Cinnamoroll” from her drop-down list of friends, and I selected “Peanutface” from my list. This can be found under your edit profile settings where your Ryu paints and scenes are, but you won’t have that option to see it until it’s been unlocked. Keep babysitting them Ryus!