The person who loses the Janken will give a piggyback ride to the winner.
Japanese page : Piggyback Ride Janken
How to play and the rules
Make a pair and do the Janken.
The loser will give a piggyback ride to the winner.
Walk around doing the piggyback and look for the other pair.
When you found the other pair, both people on the back will do the Janken.
The looser pair will give the piggyback ride to the winner pair.
Walk around doing the piggyback and look for the other pair.
Continue this until time is up.