スモールワールド現象 でしょう
sumōruwārudogenshōdeshō
1. Small world phenomenon; It's a small world
Noun
1. Small world phenomenon; It's a small world
1. world
1. World Cup (e.g. soccer)
1. domino (game); dominoes
2. domino effect
1. personal history; background
2. log; record
3. hysteresis
1. phenomenon
1. World Series (baseball)
1. decrease; reduction
1. it seems; I think
2. right?; don't you agree?
1. It's not the world.; It isn't the world.