Tomoharu is the main protagonist of the series who is sent to live on his own due to his mother's selfish motives only wanting to be with her boyfriend. He has a ghost friend, Misao Minakami, that only he can see.
[Edit]Tomoharu is the main protagonist of the series who is sent to live on his own due to his mother's selfish motives only wanting to be with her boyfriend. His mother didn’t want Tomo to get in the way of her life. He was involved in a plane crash with Misao Minakami who eventually becomes his ghost friend that only he can see. At that time, he came in contract with Kurogane but has no memory of sacrificing Misao as a Burial Doll.
Shuri gives him a silver trunk called “Extractor” three years later which Tomo opens and releases Asura Machina, becoming a Handler of the Kurogane. After Tomo’s Kurogane got defeated by Tokiya’s Hagen, Tomo and the others end up in the “First World” due to Hagane’s power going out of control. In the “First World” Tomo became the handler of Hagane in order to save the world for Misao’s sake. He learns about the destruction and how Naotaka (Tomo from the “First World”) was working to stop it. He then tries to create a Kurogane Kai but combining broken Kurogane and Shirogane. The sacrifice of Misao was necessary in destroying the gates to other worlds and stopping the destruction of the “First World”.