The Main Cast
Voiced by: Ryota Ohsaka (Japanese), Adam Gibbs (English)
An anxious, red-headed youth who just moved to Enoshima island with his grandmother, Keito. He is probably the main character.
Voiced by: Miyu Irino (Japanese), Clint Bickham (English)
An alien from an unspecified planet who decided to become Yuki's friend and fish together, with or without Yuki's agreement. He transfers to Yuki's class on the same day as him, and even moves into his house. Claims to be saving the world from...something.
Voiced by: Kouki Uchiyama (Japanese), Corey Hartzog (English)
The "Fishing Prince" of Enoshima who has been a dedicated fisher since he was a child. He teaches Yuki and Haru to fish; a real test of his patience. Seems to have some issues with his well-meaning father. He is also in Yuki and Haru's class.
Akira Agarkar Yamada
A mysterious half-Indian working for an even more mysterious organization known as "Duck." He is interested in Haru's motive for coming to Earth, and keeps a close eye on him. He is always with his co-worker, a duck named Tapioca, and can understand his speech. He later transfers into class with the others, despite being twenty-five years old.
A white duck who works for the international extraterrestrial-investigation organization Duck. Although she can only quack, she is as intelligent as a human and very dedicated to her cause.
Major Secondary Characters
Voiced by: Fumi Hirano (Japanese), Allison Keith (English)
Yuki's grandmother. A French horticulturalist and a traveler, she is patient, motherly, and wise, and above all, very laid-back to contrast Yuki's tightly-wound mannerisms. Seems to be a good judge of character.
Haru's sister. Still a Cloud Cuckoolander like the rest of her species, but much more serious and purpose-driven and less happy-go-lucky and touristy than her brother. Isn't sure Yuki is the man for the job.
Voiced by: Daisuke Hosomi (Japanese), David Wald (English)
That angry guy in a pink shirt who usually hangs around in the bait shop. He owns a fishing boat that Yuki, Haru and Natsuki work on during summer vacation, and is actually not always angry or scary. In love with Misaki.