is a psychological mystery visual novel that follows the lives of three childhood friends: Sachiko Mizuno , Takako Sugimoto , and Hibiki Narasaki . The story is told through their alternating perspectives as they navigate a blurred reality of memories and hallucinations. Core Narrative

It explores memory loss, grief, and coping mechanisms in a straightforward, grounded manner.

The story concludes with a bittersweet realization. While interpretations vary due to the dreamlike narrative, it often implies that Sachiko must find closure and face the reality of Takako no longer being in her life.

Unlike many visual novels, SeaBed has no branching paths or player choices; it is a linear story meant to be read from start to finish.

The plot centers on , a designer who begins suffering from vivid hallucinations of her missing childhood friend and lover, Takako . Seeking answers, she turns to Hibiki , a psychiatrist researching human memory. The mystery unfolds across three main storylines: