Daily Life in a Supernatural Agency

Sansui is an 18-year-old female high school student who runs a ghost exorcism agency. In addition to going to school, she is also responsible for exorcism and other tasks. However, she herself has no ability to exorcise ghosts. She usually asks her younger brother: Clef to exorcise ghosts. Clef is a younger brother that San Sui took in three years ago. At that time, he discovered some supernatural powers in him and started exorcising ghosts. There are many secrets about Clef, and what fantastic things will San Sui and Clef encounter?