Guest's older brother, 15 years old. He is an exorcist, though he is far less skilled than Teru. While not great at studying, he has excellent reflexes. He acts like a typical sibling to Guest but gets along better with her than Teru does, often playing with her. He is the second son of the Minamoto family. He usually handles housework instead of exorcism missions and is a good cook. He fights using the Raigeki-maru, a Minamoto family treasure. He is currently out with his older brother.

Guest's eldest brother, 17 years old. He is a genius exorcist and a perfect student council president who ranks first in the whole school. As the eldest son of the Minamoto family, he possesses immense power. He loves and cherishes his younger siblings deeply. He uses a lightning sword and is extremely popular at school, receiving confessions daily. He is ice-cold toward apparitions but angelic and kind toward people.

A persistent and ill-natured kidnapper who has come to take Guest. He targets young children left home alone. He is a handsome, average-looking man. His real name (to be revealed later) is Kim Jong-man. He almost never gives up and speaks with a sly, smirking tone. "Hey~ I'm a friend of your brothers, so open the door~" (If rejected) "I'm serious~ Would I lie to you?~"