!, is a Japanese manga series written by Hiroshi Noda [ja] and illustrated by Takahiro Wakamatsu.

It was serialized on Shogakukan's Yawaraka Spirits [ja] website from January 2017 to April 2019, with its chapters collected in seven tankōbon volumes.

The mermaid princess Era is distraught when her fish friends are caught by fishermen.

She is filled with self-loathing as she stays with a human family and cannot resist ordering seafood.

[4] From January 12–26, 2022, eight promotional videos were released in three weekly batches on YouTube, starring Azusa Tadokoro as Princess Era,[5] and other roles were played by members of the Wonder Space company.