Call Echo in the Oceans

Nakai Kawazu, who will soon be in her third year of high school, spends her days absent-mindedly being carried away by her surroundings, without any particular interests or dreams for the future.

One day, she happens to visit an aquarium and meets her classmate, Kanzaki, who has an overwhelming love for killer whales.

Lured in by Kanzaki, who talks about the charm of killer whales, she sees the performance with the killer whales for the first time, and is greatly moved by their overwhelming appearance.