♂ m

The male protagonist of the game. A high school student who has lost his father at a young age. The tender-hearted elder brother of Chihaya, and reliable guy among his friends.

♀ f

The eldest daughter of a noble family and sister of Tamami. A brash elitist with a large ego.

♀ f

The younger sister of Karen, although she is only one year younger than her sister, she looks and acts many years younger. Despite her immaturity and propensity to play pranks, she is quite clever at MacGyver-ing items.

♀ f

A reserved and precocious girl. Because she tries hard not to display her feelings, she is hard to read. She is also one of Akeno's closest friends and also her childhood friend.

♂ m

A man found adrift at sea. Claiming to be a marine researcher, he boards the ship, and murders the ship's crew. A fearsome person skilled at psychological manipulation and terror tactics.

♀ f

Kyosuke's younger sister. Although constitutionally weak, she is very strong-willed girl, because of the loss of her father at a young age. Highly attached to her brother.

♀ f

A long-time childhood friend of Kyosuke, and daughter of Shino. A gentle girl with strong convictions.

♂ m

Kyosuke's best friend by circumstance of sharing the same interests. He is very vain and patronizing person, and very self-centered.

♀ f

Mother of Akeno, and the person in charge of the Basilisk's test voyage. She is the one that invites Kyousuke and his friends on the ship. A very accepting and generous woman.