Rin Okumura is the fifteen-year-old protagonist of Blue Exorcist.
He is a son of Satan born from a human woman and is the inheritor of Satan's powers. His powers were sealed at birth into the demon-slaying blade Kurikara by Mephisto Pheles, the True Cross Academy principal, allowing him to live a normal human life for nearly 15 years with his twin brother Yukio and his foster father Shiro Fujimoto. Rin becomes aware of his true identity after Kurikara can no longer seal his powers, setting off a chain of events that lead to the death of Shiro at the hands of Satan, who attempts to drag Rin back to the demon realm, Gehenna. Mephisto Pheles later confronts Rin who demands Mephisto to let him join the exorcists against the demons.[ch. 1] Mephisto personally enrolls Rin into the True Cross Academy so that Rin can pursue his goal to obtain the title of "Meister" in Knight, then become a Paladin and defeat Satan.[ch. 2] While currently an Exwire, Rin wishes to obtain the highest rank of an Exorcist, Paladin, to prove Fujimoto did not want to use him as a weapon.[ch. 10]Rin is shown to be good friends with Shiemi. Rin is also a good cook, preparing meals for himself and Yukio. Rin can access the power he has inherited from Satan through drawing Kurikara.[ch. 2] The sheath acts as a portal to Gehenna, which, when the blade is drawn, returns Rin to his demon form. While in his human form, Rin exhibits a number of physical traits that are signs of his demonic nature that are intensified in the demon forms. In both forms, Rin can control incredibly destructive bright blue flames, the trademark sign of anything related to Satan. However, when he draws Kurikara, the magnitude of the flames dramatically increases and often leads to Rin being "consumed" by his own flames and losing his mind.[ch. 9] Rin later meets a spirit named Kongo Ucchusma who teaches him how to control his flames (in the anime, this was changed to Shura and Yukio who helped him).[ch. 32] Rin also has a Cat Sith, Kuro, who was initially Shiro's, as his familiar.[ch. 8] Rin is voiced by Nobuhiko Okamoto in Japanese and by Bryce Papenbrook in English, while in VOMIC he is voiced by Daisuke Namikawa. In the Blue Exorcist musical, he was portrayed by Ryou Kimura.