Naomichi Tajima

Naomichi Tajima (, Tajima Naomichi) is the father of Yukine and Yuka Miyaike.

Appearance
In the present timeline, Naomichi would be an eldery man; however, as he has only been shown in flashbacks, he appears as a presumably middle-aged man. He is of average height and build. His official coloring has not been revealed, but he has light, most likely blond hair similar to that of his son. His full face has never been shown clearly, but he has stubble on his chin and upper lip, and his bangs cover his forehead. He also has a mole on the right side of his lower jaw.

Personality
From Yuka's retelling of her childhood, Naomichi has an aggressive, strict personality. He has been physically violent with his family. He values education very highly, as he has threatened to kill his children should they fail to acquire a scholarship to get into college. It is implied in the anime that he drinks a lot. In the manga, he seems to be both a heavy smoker and prone to drunken rage.

Synopsis
In the anime, Naomichi possibly appears in one or more of Yukine's memories after he is named by Yato. In one memory, a child's hand is being shook by an adult's hand. This may reflect the deal that was made between Naomichi and his children. In another memory, a man wearing loafers steps on letters that are strewn across the floor. This may reflect Naomichi's discovery of the letters that Yuka had been sending Haruki. A third memory depicts numerous opened cans of beer, which may imply that Naomichi is a heavy drinker.

In the manga, Naomichi first appears when Yukine is sealed inside the box by the Heavens. In this memory, he is standing above Yukine as he moves to close a door of some sort, although at this point his face is heavily shadowed and his identity is not disclosed.

Yukine speaks to a local barber while he searches for information about his former life. According to one of the patrons in the barber shop, after the Tajima family's son disappeared, Naomichi was frantically telling people that his son ran away and distributing missing person flyers. A second patron mentions that the old landlord of the Tajima's apartment was often complaining about how the man living there was prone to drunken rages. The patrons seem to believe that Naomichi had actually murdered his son. Now panic-stricken, Yukine returns to the old Tajima apartment. When Father opens the front door, he fearfully recalls a memory of Naomichi standing in the entryway.

Father provides further context for Yukine's past life, which ties together the information provided by the barber and the memory Yukine saw while sealed by Heaven. After finding out that Yukine had still been writing letters to Yuka following the divorce and separation, Naomichi had beaten Yukine severely, presumably to the point that his injuries were life-threatening. Instead of taking Yukine to the hospital, Naomichi put him into a fridge and abandoned it in the mountains, leaving his son to die.

When Yukine witnesses a restaurant manager yelling "What's wrong with you?!" at a waitress, he recalls an instance where Naomichi said the same phrase to him and/or Yuka. It is implied that he stubbed out his cigarette and threw the whole ash tray at Yuka's head, causing her forehead to bleed.

Naomichi appears numerous times in a flashback while Yuka is explaining her and Yukine's childhood to Nora. Because he was so verbally and physically abusive to his family, Yuka demanded that he and his wife get divorced. Naomichi agreed, on the condition that he gets to keep one of their children. Yuka and Haruki played rock paper scissors, and in the end Haruki was forced to stay. After their family split up, Yuka continued sending letters to Haruki; however, when Naomichi discovered that they were in correspondence, he tore up the letters and sent them back to her. She has not sent them any more letters since then.

After Yukine becomes Father's shinki, Naomichi is mentioned numerous times as Yukine searches for him; however he has not yet been shown in the present timeline. Yukine at first wants to find him in order to ask why Naomichi killed him ; later on, he seems to want to find Naomichi in order to deliver divine punishment for his wrongdoings.

While Yukine and Father fight Yato and Kazuma, Yukine recalls another memory of Naomichi. Naomichi tells himself that he kicked out Yuka and his wife, rather than them leaving him. He asks Haruki if he's glad that he stayed, while Haruki watches him with a forced smile. Another brief memory shows Naomichi yelling that Haruki needs to pay him back for something he threw away. He tells Haruki to steal money since he doesn't have any of his own.