We are so the same..hahah
there is a story of both pf the children i thnik, i "read" the raw in my reading manga
and were i come from, Isreal, we kiss on both cheks between family members, mostly aunts, we didnt see for a while and maybe some people do it with their close friends
but in Argentina that in south america its common to kiss on both checks as a greeting
I'm from Brazil and people here kiss basically ANYONE in the cheeks, it can be the first time you seem them, they can be friends family or complete unknown people.. it really is a very, very annoying habit, for me at least. lol
I mean, if it's two guys they probably won't kiss each other's cheek but if it's girl and girl or girl and guy then they'll most likely do it.

First : I CaNnOT wAiT fOr ThE oThEr ChApTeRs
Second : I wAnT a StOrY oF tHe KiDs WhEn ThEy GrOw Up.
Third : Idek where Japan found the idea that Europeans kiss everyone they see like calm down idek where that kid was from but I'm picking Europe since I've seen it in many other manga too , Europeans might kiss on the cheek only close people for God's sake. We don't go licking like everyone we see. At least I'll talk for myself here.