Keiichirou Miyanoshita (1994-?) is one of the main characters of Gakkou no Kaidan Anime Series. He is the brother of Satsuki Miyanoshita, the youngest of the group. Keiichirou is a 1st Grade student in Class 2 at Amanogawa Elementary School.
Keiichirou is a shy boy who is very lonely. He soon became a good friend of Amanojaku, and sometimes took him to the school. Keiichirou really misses his mother. He also loves his older sister Satsuki and his father. Keiichirou also seems to be easily scared. He is also a good friend of Hajime and Leo and seems to see them as his "older brothers". He also likes to play with Momoko.