Yumiko Kusaka

日下 友美子

Girl #7 is an athletic tomboy and Yukiko's best friend. She has a crush on Shuuya, but does not want to admit it to Yukiko, since Yukiko likes him, too. [Spoiler] On the island, she and Yukiko decide to use her megaphone to call the other students and discuss things as a group. However, this attracts the attention of Kazuo Kiriyama, who quickly dispatches both of them. [/Spoiler] (Source: Wikipedia)