I think it has to do with friends, the top number is how many friends you have who are in that area, the lower one is how many people from your compatible/suggestion list. Not completely sure thoughWhat do the "people" symbols mean on certain squares on the map? They have 2 numbers next to them...Friends' locations? Spirit drops (for the numbers)?
Can someone explain the character ratings to me. I summoned something that has a rating of "R". What does that mean? Rare? C is common, UC is ... ultra common? R is rare? Just guessing.
C = Common, UC = Uncommon, R = Rare and SR = Super Rare