|Title||Namimori Transfer Student|
|Manga Debut||Chapter 285|
Rauji Ooyama is part of the Shimon Famiglia and attended Shimon Middle but had to migrate to Namimori after an earthquake struck their place of residence. Namimori was chosen because the area has a low Earthquake frequency and were traveling there anyway because of the Decimo Inheritance Ceremony.
Rauji is generally a quiet character, only speaking when he needs to or when spoken to. He often agrees with what the others have to say and is very considerate, but to what extent is unknown. This was shown when he offered to walk Enma Kozato home after he had been bullied.