Help me find this anime — possibly a movie or single episode, 2D animation
I watched it as a kid, probably early 2000s or before 2010.
The animation style is 2D, not the typical “big-eyed” modern anime style — more slim, beautiful eyes.
The story centers around sisters (or at least multiple female leads who are siblings).
It has a strong connection to the ocean or a village near the ocean.
Characters wear traditional or village-style clothing — not modern outfits.
One key scene I remember is one sister or female character practicing her water-based powers in the ocean or a water body. She finally manages to control or splash the water dramatically.
The plot involves water or ocean-related magic or powers.
It might be from Japan, Korea, or China.
It’s either a single-episode movie or a short OVA — not a long TV series.
The theme includes some adventure and maybe a love story
The animation doesn’t have heavy action like fighting scenes but is more focused on emotional storytelling and magical powers.
