SeaBed is a visual novel with decisions and consequences about relationships between girls. This story reveals psychiatric problems associated with hallucinations and nightmares. Therefore, the content that periodically appears in the plot may not be suitable for the entire audience and may cause unpleasant sensations, so before passing through it is worth being prepared for the corresponding scenes.

Mizuno Schashiko is a young designer who just recently moved to Tokyo. She suffers from severe hallucinations, which most often occur after sleep. Her visions do not seem to disappear after waking up and continue to terrorize her, causing her brain to boil. But, despite her problems, she continues to live and find new joys. Together with her friend Takako, she opens the Clover Design company and becomes its CEO. She does not yet know that her main business partner has been in love with her since she was 5 years old, although she does not consider herself homosexual, holding the opinion that in fact her lover was unlucky to be born a woman.

In SeaBed, the user will need to help the girl get rid of her illness, and also choose a partner who will accompany her through life. You can also start an affair with the head psychiatrist Narasaki, who is the owner of an entire clinic. She is sincerely interested in the patient's case and is ready to conduct additional research outside the office.