Happycane evolves into Starrycane when fused with a Red Hibiscus.
Yo-kai Watch 2
In Japan, the player must obtain either a Happycane or Starrycane Yo-kai Watch: Tomodachi Ukiukipedia card. Then they should scan the QR Code on said cards in Piggleston Bank to obtain a Local Coin - Okinawa. They must then use the coin in the Crank-a-kai to free Happycane.
In North America, the player must obtain the password for the Traveler's Coin - Island and using the coin in the Crank-a-kai to free Happycane.