Tomoaki Iwakura
Tomoaki Iwakura.png
Vital Statistics
Name Tomoaki Iwakura
Kanji 岩倉 智明
Gender Male
Age 49
Blood Type O
Professional Statistics
Btooom! Statistics
Status Deceased
BIM Type 1300°C Flammable Oil Splashing Flame BIM
Kill(s) Unknown
Image gallery

Tomoaki Iwakura is a minor player of the live-action Btooom! game. He is notable mostly for his alliance with Kōsuke Kira and for possessing the 1300°C Flammable Oil Splashing Flame BIM, of which he was the first person seen using it.


A middle-aged man, Tomoaki has tanned skin and short grey hair. He wears a plain white, buttoned-up shirt, dark grey pants, and grey shoes. A Btooom! player, he carries a bandolier on his waist and has an IC chip implanted in his left hand.


He is shown to be short-tempered and is arguably unintelligent for his impulsiveness. Although he is stubborn, he recognizes and isn't hesitant to use others' good judgment.


  • Kōsuke Kira — Both Kōsuke and Tomoaki were part of an alliance, with Kōsuke acting as leader. Tomoaki resented Kōsuke's disdain toward him, but was also aware and even reliant of the latter's knowledge of the game's dangers and the tactics used in it.


On the fourth day, Tomoaki and Kōsuke ambush Ryōta Sakamoto after Ryōta obtained the supply package the two were after. However, Tomoaki fails to kill Ryōta (after missing three times) and becomes indirectly responsible for losing the supply package, as Nobutaka Oda stole it from Ryōta. After arguing, Kōsuke advises Tomoaki to ambush the two at a nearby beach, as it is the most likely place for them to surface from. Tomoaki agrees and sets off.[1] Once at the beach, Tomoaki sends out a sonar wave, detecting no-one. He then notices the supply package on the ground nearby. Believing that someone hid it away, he approaches it. Unbeknownst to him, Nobutaka had set up a remote control BIM nearby, which the latter detonates, killing Tomoaki.[2]

Equipment and skills

1300°C Flammable Oil Splashing Flame BIM

  • Mainly threw his BIMs at the enemy.
  • Observed amount used: 3.
  • Used three during his encounter with Ryōta on the fourth day.
  • Taken by Nobutaka at post-death.

IC Chip

  • Taken by Nobutaka at post-death.



  1. Btooom! manga chapter 39, page 39
  2. Btooom! manga chapter 40, page 38
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