Ahonui

 is one of the protagonists in Mermaid Pearl Pretty Cure!. One of the mermaids in La Mermaidia. Ahonui was quite hyper, but always turned upside-down. She is sadistic, but easily angry and nervous. She likes volleyball. When she join the group, she losses her sadistic and becomes more confident. Ahonui is a good friend of Kalani and it can be jealousy at all times when she saw some people have wants.

Her pretty Cure ego is Cure Coast, the sound pearl of Ballad, based on sun/fruits.

Personality
Ahonui was quite hyper, but always turned upside-down. She is sadistic, but easily angry and nervous. She likes volleyball. When she join the group, she losses her sadistic and becomes more confident. Ahonui is a good friend of Kalani and it can be jealousy at all times when she saw some people have wants.

Cure Coast
Kyua Koasuto (キュアコアスト) is the pretty Cure form of Ahonui. She represents the sound pearl of Reggae, based on sun/fruits. In order to transform, she needs the AquaLace and her Mermaid Pearls.

Transformation
Pretty Cure! Mermaid Pearl! is Ahonui's transformation phrase in Mermaid Pearl Pretty Cure!.