Kotona Masaki is a character from Valkyrie Drive Siren. She's a member of the Resistance and the partner of Konoe Kirihara. A little girl with a rather immature body. Not even 145 cm tall, her small height matches her flat chest. She talks in a childish manner befitting her looks, but she’s not dumb. That said, she’s definitely clumsy, forcing her to rely on Kanoe in battle. She uses her railgun Exstar to unleash gigantic attacks that contrast heavily with her small frame. Her hair is a glossy pink.