Battle Royale

Girl #12 Atsuko Kosaka (高坂 敦子, Kōsaka Atsuko) is a minor character in Battle Royale II: Blitz Royale.


Nothing is known about Atsuko's past.

In the Program[]

When Makoto Hashimoto's group (consisting of herself, Suzuko Arikawa, Fumiya Daichi, Yuki Ito, and Hajime Minami) were allowed to stay in the dorms while the rest of the class was forced to live in hellish conditions, the other students began to resent them, Atsuko included. It's unknown if Atsuko was addicted to the pills or not. When the teacher asked if any of the students were still alive, the commander said the only girl alive is Makoto, confirming Atsuko's death.


  • The name Atsuko means "honest" (敦) (atsu), and "child" (子) (ko)
  • Atsuko's surname Kosaka "tall, expensive" (高) (), and "slope, incline" (坂) (saka)