Tsukasa Yugi is Hanako's twin brother and quite frequently brings up the fact that Hanako had murdered him. He likes hanging out with Natsuhiko and Sakura. Tsukasa can be described as childish, harsh or cat-like, Sakura said that Tsukasa was like a cat when she first met Nene in the manga.

Tsukasa's voice is medium-high tone and it's almost like a child's voice