Kamome Kushima is a mysterious girl the protagonist meets at the island. She always drags a large suitcase around with her. She would never ever tell what is inside. Just like Takahara Hairi, she only stays on the island until the end of summer. With an old map, she wanders around the island looking for something. She said that is a treasure map.
"Let's go. To where the pirate ship dwells."
(Source: Summer Pockets Wiki, edited)
