Japanese version of Tomodachi Life (or Tomodachi Collection: New Life). This happens when a baby Mii is fully grown and can move out to either another Island via StreetPass or can stay on the current island and live in the Mii Appartment.
IN VIDEO
It askes if the baby Mii should go explore another island (if the person recieves an StreetPass with the baby Mii, a building will be unlocked) or stay at current island and live in the Mii Appartment.

All songs are copyrighted by Nintendo.