Okuda was a tall and thin boy with long and thin hair, he wore small hoop earrings in each ear and nearly always had a vey sadistic smile.
Okuda was a sadistic teen who did what he wanted when he wanted, and was happy to commit any crimes he wanted such as assult, stealing and even raping a younger girl, his personality even shocked his best friend so much that he refused to continue seeing him. He was able to get away with many of his crimes due to his money, and despite being described as unitellignet he seemed to be smarter than he gave off.
When he is first seen he is loitering in the school hallways with his friend Takeo Uno waiting for a young boy named Mita to come by, when Mita does walk by they confront him, Okuda throws a knife into the ground and asks Mita to pick it up, he does so but as he attempts to give it to him he accuses Mita of threatening him with a knife and grabs him by the collar, he says he could look over the incident if Mita were to pay him.
Later the next day Jun Fudo witnesses Okuda and Uno forcing Mita to give them his money, Jun confronts them and asks what was going on, Okuda says Mita was just giving him back the money he owned him, to which Mita feebly agrees with. Jun asks for his name, he tells her and leaves with Uno.
Later Uno and Okuda are in a bar when they spot Lan Asuka and Jun sitting at the back talking, Okuda tells Uno that they should wait till later when it was quieter and they should jump them and rape them, this scares Uno and he leaves saying that they could not be friends anymore. Okudo manages to control his anger and also leaves for his home. Unkown to him the same night Uno was killed by a large spider like Devilbeast.
The next day he spies Mita talking to a pretty girl in his year, once the two split up Okuda comes up to Mita and asks who she was, Mita replies saying she was just a childhood friend, Okuda says that he had fallen for her and told Mita to arrange for them both to meet. Mita agrees however unknown to him Okuda and a group of his friends were waiting for him at the arranged point and planned to rape her, Mita stands in the corner ashamed as the older boys strip her naked, Okuda comes over and asks if Mita wanted the first go on her, one of Okuda's friends says he wasn't brave enough however as he said that Mita started to do a strange chant and removed his clothing, he then starts to transform into the bizarre Devilbeast that had killed Uno. He starts to kill the boys, Okuda manages to get to the door only to encounter Jun, he manages to tell Jun what had happened to Mita before the spider chomps down on his head killing him.