Katai Tayama

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田山 花袋


Tayama Katai

Personal Information




Professional Information

Information Broker


Armed Detective Agency

Ability Name





Chapter 41

Voice Actors

Katai Tayama 田山 花袋 (Tayama Katai?) is an information broker for the Armed Detective Company. He used to be a member of the Agency, and has known Kunikida for ten years.


Katai is a dark-haired man that seems to be in his 20s. He wears small, circular glasses and is often found resting in his futon. When standing next to Natsume Soseki, h is shown to be around average height. His attire consists of a white button-up shirt, a patterned robe over his shoulders and dark pants.


He is an anxious, nervous, easily stressed out and unmotivated man, who lies in his futon all day, refusing to go outside or communicate with others[1]


His ability, Futon (蒲団 (Futon?), allows him to control any electronics within sight as long as he isn’t touching them. And at a speed that is tens of times faster than normal.

Additionally, it seems that he can only concentrate at wherever his body and mind are most relaxed. He can only activate his ability when he’s wrapped in his futon.


10 years ago, Katai and Kunikida met. According to Kunikida, when Katai was dragged out of his room to join the Agency, he laid out a futon in his office and began living there and even locked himself in his room to avoid going out.


Kunikida and Atsushi visit Katai in order to obtain information. He's supposedly a remarkable hacker that served as an informant for them. But then he is unable to help the Agency right away due to the fact that he is suffering from love-sickness. Katai had fallen in love with a black haired maiden and contracted the Agency to help him confess to her as per Atsushi's suggestion.[2]

It is revealed the woman is Gin, and he is consequently turned down. He is saddened by this, but claims that it is enough for him. With that he gets to work.[2]

Katai makes a brief cameo when it is revealed that the Agency asked him for help regarding the mastermind.[3]

Later, Katai is seen researching the Rats in the House of the Dead, when Fyodor Dostoyevsky suddenly comes up behind him and shoots him.[4] Katai leaves behind a hint of evidence to tell Kunikida that he is safe. He later shows up with Natsume and he reveals that Katai has discovered the base of the Rats.[5]


  • His friendship with Kunikida mirrors the real Katai's friendship with Kunikida, after joining the Literary World (文学界, Bungakukai) group.


  1. Bungou Stray Dogs Manga - Chapter 50
  2. 2.0 2.1 Bungo Stray Dogs manga, chapter 41
  3. Bungo Stray Dogs manga, chapter 48.5
  4. Bungo Stray Dogs manga, chapter 49
  5. Bungo Stray Dogs manga, chapter 50

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