Yuu Sasaki

The flirtatious and eccentric rook who oversees Endgame's Medical Division. Yuu is known to be somewhat of a strange man whose interest is piqued by anything out of the ordinary. Though viewed by some others as a bit of a maniac, he is both inquisitive and deeply passionate. Yuu often finds himself at the heart of Endgame's most dangerous missions desperately ensuring none of the people under his care come to harm.