Goma-chan

Goma-chan is a baby seal who Ashibe and his parents find in the first installment of the series. Though they initially confuse Goma-chan for a fish and thus decide to eat him, they change their plans when Ashibe's father finds out that Goma-chan is a baby seal, so they decide to keep him as a pet instead. Viewed as extremely cute by all who see him. He also follows around Ashibe wherever he goes.

Appearance
From a book Pa believes Goma-chan to be a baby gomafu seal yet he physically resembles a small white harp seal, with black eyes with white pupils. Goma-chan also has small eyebrows of a similar width to his eyes and three thin black whiskers on either side of his mouth. A light gray area is around his mouth which is pink when he opens it. Sometimes Goma-chan's body does resemble a small cartoon whale down to the flippers. Despite his large size in comparison to Ashiya, Goma-chan is capable of being carried with one arm by the first grader which may indicate how unusually light in weight he is.

Personality
Goma-chan is affectionate playfully nuzzling Ashiya's face when meeting him for the first time.

Episode 1
Goma-chan falls off the back of a moving truck and is brought into Ashiya's house who believes him to be a large fish.

He evidently made it clear to Pa that he wanted to join Ashiya at school as he makes his way there. Goma-chan is happy around the other children. He thinks of the comment that he looks similar to Mao Amachi. Goma-chan is carried under one arm by Ayashi as they walk from school together with Yuma and Mao before coming across Sakata and his Big Bro.

Trivia

 * His name "Goma-chan" comes from hearing him described as a gomafu seal by his father.
 * Goma-chan frequently emits a high-pitched squeal, written as "Kyu!"
 * He is capable of serving as an alarm clock by slapping everyone in the morning.