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♀ f

Originally from a prominent family which got bankrupt due to their failure in space research and exploitation. Aiming on going to a space exploitation related school, Erna came to the island and joined the training school to take the training that's connected with space. Though smart and nobody can ... read more

Originally from a prominent family which got bankrupt due to their failure in space research and exploitation. Aiming on going to a space exploitation related school, Erna came to the island and joined the training school to take the training that's connected with space. Though smart and nobody can defeat her in terms of technology, she is an uncooperative person and isn't interested in teamplay.

♀ f

Tsukimi is a delinquent, causes often trouble and a bit of a bullish girl. Though a bit violent, Tsukimi is actually a gentle and friendly girl. She loves driving, with all the experience of driving different vehicles, she calls herself the “Emperor of the Unlicensed”. Because her parents were famo... read more

Tsukimi is a delinquent, causes often trouble and a bit of a bullish girl. Though a bit violent, Tsukimi is actually a gentle and friendly girl. She loves driving, with all the experience of driving different vehicles, she calls herself the “Emperor of the Unlicensed”. Because her parents were famous sailors and never came home, she thought they abandoned. She doesn't get along with Erna. [Edited from dnandre's review)

♀ f

A straight peasant girl who is very emotional, but also simple and gentle, though a bit clumsy. Skillful at swimming but poor with machines. She is nicknamed as the "Island's Mermaid" due to her swimming skills. Born into a distinguished family, also the Chief Village's grandchild, she is proud of h... read more

A straight peasant girl who is very emotional, but also simple and gentle, though a bit clumsy. Skillful at swimming but poor with machines. She is nicknamed as the "Island's Mermaid" due to her swimming skills. Born into a distinguished family, also the Chief Village's grandchild, she is proud of her long hair that resembles her death mother's. Her parents died in an accident related to the sea.

♀ f

A girl that is very skillful with machines (or should I say, she has a machine fetish). Timid and afraid of talking to people, but once the subject of machines is brought up, she becomes more talkative. She is very detailed in serial numbers and diving suits, not to mention good at maintenance work.... read more

A girl that is very skillful with machines (or should I say, she has a machine fetish). Timid and afraid of talking to people, but once the subject of machines is brought up, she becomes more talkative. She is very detailed in serial numbers and diving suits, not to mention good at maintenance work. Rio's wish is to become an ocean engineer. However, Rio receives the worst times in the training classes and often gets punishments for failing, such as cleaning the pool and bathrooms. Rio, along with the protagonist, are both bad swimmers.

♀ f

One of the four sub-heroines. Aqua is a robot that has been just recently activated, and whose job is mostly to clean the school's halls.

♀ f

One of the four sub-heroines. A genius transfer student who came to the academy to raise her skills, but is also very lonely.

♀ f

One of the four sub-heroines. Takeru's teacher whose lessons are often called as lessons from hell.

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♀ f

♂ m

♂ m

♀ f

One of the four sub-heroines. Minamo's friend who is protective of her and keeps a cool attitude in front of boys.