Setting and story The primary setting of the story is , a small rural island off the coast of mainland Japan, known for its vivid natural scenery, beaches, and old infrastructure. The island is connected to the mainland by a
truss railway bridge, and some bus services also travel between the two. Harukajima's main form of local transportation is the
tram operated by . It is often referred to as the by island residents. The only school on Harukajima is , a large institution with grand Western-style architecture attended by the protagonist and heroines. Kotogaoka Academy is divided into three sections—for elementary, junior high, and high school students—and the
tram line runs all the way up to the school gates. Although the island feels familiar to him, his memories of growing up there remain hazy. Upon arriving, he is reunited with his childhood friend, Miki Tsukimura, and moves in with his grandfather, Kangetsu. Shortly afterward, his younger stepsister, Natsuki Yukino, unexpectedly shows up, having followed him to the island. The two enroll at Kotogaoka Academy as high school students. As Kōichi adjusts to life on Harukajima, he meets several other girls with whom he begins to form meaningful connections, and gradually starts to piece together his mysterious past.
Main characters The protagonist of
Clear is , a cynical and lazy young man who feels alienated from everyone around him, knowing he is different from normal people. Missing many of his memories and emotions, he finds it difficult to understand and connect with others. Kōichi is not an ordinary human—he is, in fact, a type of bloodsucking
vampire. When Kōichi moves to Harukajima, he is followed by his caring younger stepsister, , the first heroine of the game. Though actually his cousin, she was adopted by the Yukino family after her parents died. Viewing herself as her older brother's "guardian", she took on all the housework and cared for him while they lived with Kōichi's father in the city. She is shy and quiet around most people but shows her more lively side when she's with Kōichi. Another heroine, , is a clumsy and absentminded
maid who works at the Yukino residence. Like the others, she also attends Kotogaoka Academy. She suffers from
amnesia and has no memory of her past, which led to her being taken in by Kangetsu and brought to live in the Yukino household. She is affectionately nicknamed "Nono-chan". The fourth heroine is , a high-spirited girl with a positive attitude who also attends Kotogaoka Academy. She works part-time as an apprentice
shrine maiden at Ebisu Shrine, assisting Hisame, the chief priest's daughter, in
exorcising ghosts and
spirits. The reason she became a shrine maiden is because spirits are drawn to Haruno and often
possess her. The fourth and final heroine is , a cheerful girl often mistaken for being much younger due to her short stature and childlike demeanor. She always carries a doll named with her, through which she communicates using
ventriloquism. Sayu is a member of the volunteer club alongside Miki, who she is good friends with. ==Development and release==