|Relatives, etc.||Unnamed Father|
|Anime debut||Episode 22|
|Manga debut||Chapter 60|
Kitayama has black hair and was seen wearing a white t-shirt tucked into a pair of blue jeans.
Nothing is known about Kitayama's personality.
Kitayama is first seen walking through the nearby forest with a friend, later said friend is seen running back to the village with blood on his clothes, screaming. His friend claims that a monster attacked himself and Kitayama, killing the latter. Though Shinichi was initially a suspect, the police had finally arrived and searched the woods and found Kitayama's body mauled and half his face was attached to a branch. The way he was killed reminds the police officer of the Mincemeat Murders.