Piwi

Piwi is an enigmatic little being that Heruku and Annie encountered while drifting on a deserted island. Resembling a small green bird in appearance, Piwi possesses an inexhaustible energy and a deep passion for singing. Though typically carefree and prone to mischief, this tiny companion holds a surprisingly significant place within Heruku's group—capable of unleashing a mysterious power far beyond what its small frame might suggest when the situation truly calls for it.