Ryogo is a tall young man with black spiky short hair and a braid in front of his right ear. In the past his hair was dyed light colored, he dyed it back later to show determination.
Even though he often teases Rokuro, he is really kind and thinks of Rokuro as his little brother. He was trying to help Rokuro overcome his trauma and return being an exorcist, but was not able to. As he saw Benio having an impact on Rokuro, he asked her if she can help him.
A long time ago, when he was a young boy, his family was attacked by Impurity. His older brother hid Ryogo in a wardrobe in order protect him, and promised he would be return. Unfortunately, his brother and his parents were killed by Impurity. An exorcist group arrived and cleansed the Impurity, saving Ryogo in time, but he became horrified when seeing his family bleeding corpses. He decided to become exorcist after Zenkichi Otomi and his group saved him.
It's shown in flashback that Ryogo is the main caretaker of infant-like child Rokuro. Although forced by Zenkichi to do so, the two develop firm brotherly bond, and Ryogo was afraid that Rokuro would turn a non-human one day.
Ryogo is first seen exorcising an Impurity with the help of Zenkichi Otomi, who, after drawing the Impurity out of the child, asks Ryogo to take care of the rest. On their way back, Ryogo remembers that Rokuro Enmado is supposed to come with them, but did not show up.
Later Ryogo is divvying up the requests in Seika Dormitory as Rokuro storms in crying and asks if there is something good about him, as a girl turned him down. As everyone provides stupid "good" qualities, Ryogo scolds Rokuro about ditching another Impurity exorcism. Ryogo and the rest try to tell Rokuro that he is only good as an exorcist and should become such, but Rokuro leaves annoyed. Atsushi Sukumozuka and Shinnosuke Kuzaki, question Rokuro's exorcist skills as they have not seen him, but Ryōgo tells them that Rokuro is an amazing exorcist.
After the Twin Stars' fight with Yuto Ijika, Ryogo, like other exorcists, is aware of the truth and felt sorry for not understanding Rokuro completely. Once Rokuro aimed to go to the Tsuchimikado Island with Benio Adashino, he trained hard to ensure the town's safety without them.
Powers and Abilities
As an adult male exorcist, Ryogo is of average power. His ability is used as "Ryogo Scale" to show the power of impurities in the volumes.
Exorcism Enchantment (陰陽呪装 Onmyō Jusō?, "Charm Gear")
- Banma Chobuku (万魔調伏 Banma Chōbuku?, "All Evils Exorcism"): Using the Purification Blade Talisman (斬浄穢符 Zanjōe-fu?, "Cleaning Impurity Severance Charm"), Ryogo enables his sword to harm Impurities.
- "Exorcists are much more like families than teams."
- The name Ryogo means "clear" (亮) (ryo) and "enlightenment" (悟) (go).
- Ryogo's surname Nagitsuji means "used for place names" (椥) (nagi) and "street, crossroad" (辻) (tsuji).