♂ m

♀ f

A girl who the protagonist met in a coffee shop. They become friends soon and then she even becomes his girlfriend. Due to a mysterious accident her memory can be kept for three days only. Chihaya always looks bright and has a kind personality, and always meets a people with a bright smile.

♀ f

While looking as a kid, Yuiko is the same age as the protagonist — her cousin and childhood friend. Being very spoiled by her parents, she thinks that all of her opininons are right in all ways. Hates to lose to someone.

♀ f

A priestess of the local shrine who the protagonist meets on the day of festival. Speaks in an odious tone. Not surprisingly naive, usually involves lots of troubles.

♂ m

A man who's looking for a treasure on this island. Works for a salvage company and owns a ship.

♂ m

The owner of the café that Chihaya frequents. He’s considerate and looks out for her, as she loses her memory every three days.

♂ m

Chihaya's father. He makes a living managing assets.

♀ f

Sasara's mother.

♀ f

Yuiko’s younger sister, a cheerful and energetic girl full of power. She’s taller than her older sister.

♀ f

The protagonist’s aunt, who runs a guesthouse all by herself. She is also Yuiko’s mother. She dotes on her two daughters, though Yuiko finds it a bit troublesome. A very reliable person with a strong-willed personality.

♀ f

A female journalist from a magazine company who came to the island for an interview.

♂ m

A boy who lives on the island. He helps out at the seaside hut run by his parents. Despite his rough appearance, he’s actually a good guy. He’s a childhood friend of Yuiko and the protagonist.

♂ m

The head priest of the island’s shrine. He is also Sasara's father.