Two women passing each other. 5311／二人のすれ違う女

全く知らない人同士でも、間に５人の人を入れると繋がりができるらしい。

Apparently, even if two people don't know each other at all, they can make a connection if there are five people between them.

友達の友達の友達の友達の友達は友達。

A friend of a friend of a friend of a friend is a friend.