Kai, a young middle schooler, lives in Hinashi Town, a lonely fishing village, with his father and his grandfather, a sun-umbrella maker. He used to live in Tokyo, but after his parents divorced he moved back to his parent's home town. Kai has trouble telling his parents the complicated feelings he has for them, and he's lonely and pessimistic about his school life. One of his joys is uploading songs he writes to the internet.
One day, his classmates Kunio and Yuuho invite him to join their band, "SEIRÈN." As he reluctantly follows them to Merfolk Island, their practice spot, they meet Lu, the mermaid girl. Lu sings merrily and dances innocently. As Kai begins to spend time with her, he starts to be able to say what it is that he's really thinking.
But since ancient times, the people of Hinashi Town have thought that mermaids brought disaster. Something happens that puts a huge rift between Lu and the townspeople. And then, the town is in danger. Will Kai's cry for the heart be able to save the town?
(Source: Fuji Creative Corporation)
Characters & Voice Actors

Ashimoto, Kai
Main
Shimoda, Shouta
Japanese
Lu
Main
Tani, Kanon
Japanese
Ashimoto, Teruo
Supporting
Suzumura, Kenichi
Japanese
Ashimoto, Grandfather
Supporting
Emoto, Akira
Japanese
Chief Priest
Supporting
Sasaki, Mutsumi
Japanese
Ebina, Father
Supporting
Cho
JapaneseRecommended for you
Pop in Q
Movie
95m
Girl Who Leapt Through Space Picture Drama
Special
3m
Orochi, the Eight-Headed Dragon
Movie
86m
Saint Seiya: Legend of Sanctuary
Movie
92m
ZENONZARD THE ANIMATION
ONA
14m
fake!fake!
Music
3m
The Life of Budori Gusuko
Movie
106m
Fate/Grand Order: Moonlight/Lostroom
Special
32m
Labyrinth Of Flames
OVA
33m
Kishin Corps
OVA
33m
Magical Idol Pastel Yumi
TV
23m
Dragon Collection
TV
11m
The Silver Guardian
TV
13m
Squishy! Black Clover
ONA
7m
Goku II: Midnight Eye
OVA
53m
Comments