An average second year high school student. He is hospitalized in Wakaba Hospital for hepatitis, but unable to endure the boredom, he makes daily attempts to escape. Although he does not have any particular goal in mind, he wishes to leave Ise after he graduates from high school.
A girl of the same age as Yuichi. She has been hospitalized for most of her life due to a heart condition. She loves to read, and appears very ladylike at a glance, but in fact acts very selfishly and drags Yuichi around.
An ex-delinquent nurse. She is in charge of making sure that Yuichi does not escape from the hospital, and converses with him often. She has a good-natured personality, but can be very scary when angry.
The doctor who is in charge of Rika's care. In the past, he was an elite staff member of a university hospital. It is clear that he is attempting to keep Yuichi away from Rika.
Despite his imposing physique, he has a gentle personality and likes to make sweets as a hobby. However, it seems he has a secret hobby as well...
Yuichi's childhood friend. She is a level-headed girl who is good at taking care of others. Ever since she entered high school, her relationship with Yuichi has become estranged.
Yuichi's classmate. Despite being a frivolous troublemaker, he is somehow hard to dislike.
