Tsubone Kasuga
Tsubone Kasuga.PNG
Vital Statistics
Name Tsubone Kasuga
Kanji 春日 つぼね
Gender Female
Age 19
Blood Type A
Professional Statistics
Occupation College Student
Hometown Miyagi
Btooom! Statistics
Status Deceased
BIM Type Blazing Gas BIM
Kill(s) 0
Japanese VA
English VA
Image gallery

"But I'm the one who found it!"'' — Tsubone Kasuga

Tsubone Kasuga (春日 つぼね Kasuga Tsubone) was a player in the real-life game of Btooom! who accidentally killed herself by throwing a Blazing Gas BIM. After that, Nobutaka Oda obtained her IC chip and supply case.


Tsubone bears a petite height and a black hair that is tied in a pigtail hairstyle.

Her attire consists of a long sleeve dress with a tie and a belt. Like any player of the Btooom! game, she has an IC chip implanted in her left hand and carries a bandolier, which is worn on her waist.[1]


Tsubone acts like a happy-go-lucky girl, but she'll act selfishly when it comes to survival.


Equipment and skills



  • Tsubone's surname Kasuga means "spring" (春) (ka) and "sun, day" (日) (suka/suga).


  • Tsubine is one of the two people who died of suicide, the other one was Kiyoshi Taira.
    • While Taira purposefully did it, Tsubone did it on accident.


  1. Btooom! manga, chapter 6, page 21
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