Battle Royale

For the novel, please go to Yumiko Kusaka (Novel). For the manga, please go to Yumiko Kusaka (Manga).

Yumiko Kusaka (日下 友美子, Kusaka Yumiko) is a minor character in Battle Royale.


Not much is know about Yumiko's backstory. If Yumiko was anything like her novel and manga counterparts, then she would've been a tomboy.

Friends and Enemies[]

Yumiko was best friends with Yukiko Kitano, and knew that Yukiko has a crush on Shuya Nanahara. If Yumiko was anything like her novel and manga counterparts, then she also would've had a crush on Shuya, but wouldn't've said anything since she knew about Yukiko's feelings.

Before the Program[]

Before Kitano resigned, Class B decided to take a day off and skip school, Yumiko included; she attended the basketball game against Class A, and celebrated when Class B won. Yumiko decided to go on the class trip; while on the bus, she pored over a catalog with Yukiko. Yumiko fell asleep after breathing in a sleeping gas pumped into the bus; she was then transported to an island and fitted with an explosive collar.

Yumiko, along with the rest of the class, woke up in a classroom in the island's school. Unnerved by the presence of Shogo Kawada and Kazuo Kiriyama, Yumiko rushed over to the window to watch a helicopter land in front of the school. Yumiko was shocked to see that Kitano had returned. When Kitano asked the class if they knew the BR Act law, Yumiko kept quiet, obviously knowing the law, but afraid to say it aloud. Yumiko was horrified upon seeing Masao Hayashida's corpse. When Fumiyo Fujiyoshi was killed, Yumiko panicked and ran for the door trying to escape before running towards the back of the classroom when the soldiers began firing. When Yoshitoki Kuninobu's collar got activated, Yumiko ran around the room trying to evade him.

When Yumiko's name was called, she grabbed her school bag and ran towards the front of the room; she caught her supply bag and ran out of the school.

During the Program


Yumiko (left), badly injured after being shot by Kazuo Kiriyama.

Yumiko met with Yukiko after leaving the school, and the two make their way up to a high hill where they make an announcement using Yukiko's megaphone, calling for their classmates to meet them and discuss things as a group. Shogo Kawada fired his shotgun into the air to scare them off, but they stayed where they were and begged whoever was shooting to stop. Shuya yelled at them to run, but rather than move, Yumiko began yelling for Shuya to come to them, before hastily tacking on that Yukiko's had a crush on him for a while, prompting Yukiko to tackle her and call her an idiot. The announcements alerted Kazuo to their location. Kazuo crept up on them and shot both of them with Ryuhei Sasagawa's Uzi. While Yukiko died after the first round, Yumiko survived only to be tortured by Kazuo who picked up the megaphone and had her whimper into it in pain. Kazuo then killed her by shooting another round of bullets into her stomach. Shuya, who was nearby at the time of the girls' deaths, was distraught at their murders.


  • The name Yumiko means "friend, companion, pal" (友) (yu), "beautiful" (美) (mi) and "child" (子) (ko).
  • Yumiko's surname Kusaka means "sun, day" (日) (ku) and "under, below" (下) (saka).