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Aika is a skilled but impulsive high school student who earns a C-class salvager license yet struggles to find work due to her age and reputation. After advertising her services at school, she is hired by Erika, a wealthy student and leader of the Treasure Hunting Club. What begins as a simple salvage job quickly turns dangerous, leading Aika into a high-stakes mission, a clash in the southern islands, and the mystery surrounding a girl named Karen.
Seasons
Episode 1
Trial 1: Secret Game
25m
Aika Sumeragi, a high school age C-Class salvager, is hired by class president Eri Shinkai to pilot her salvaging vessel. After introducing Aika to the treasure hunting club, and revealing coordinates hidden in a marking on fellow classmate Karen Minamino's chest, they embark on an adventure to see where it leads.
Episode 2
Trial 2: Peach Peach Beach
25m
After arriving at the coordinates, Eri decides the treasure hunting club needs a break and declares that they will have a beach party on a nearby island. They are not alone, however, and Aika has to fight her teacher to protect Karen.
Episode 3Latest episode
Trial 3: Deep Blue Girl
25m
In the final episode of the series, Aika, Eri, and Karen find an old airport at the bottom of the ocean. After exploring the still functional facility, they finally uncover the secret to Karen's past.
