Wavebreaker

Wavebreaker is the name of a magical sword. It has a crosshilt styled in waves, and a pommel with a fist that has too many fingers. It has the power to disenchant and to scry.

The sword is first encountered by Eursulon, Suvi and Ame during the Children's Adventure. Suvi gave it to Eursulon before the end of the summer, and he took it with him when he left.

When Suvi and Ame are adults, it is revealed that a curse prevents Grandma Ren from passing her secrets to Ame. To end the curse, Taro the rooster implores the girls to retrieve Wavebreaker from the bathtub in the attic. As Taro describes the sword, Suvi and Ame realize what happened to it, and set out to find Eursulon.

Although Eursulon did have the sword five years previous, by the time Suvi and Ame reach him, Eursulon reveals he no longer has it.