Talk:Ken Kaneki/@comment-213.120.234.106-20150728120548/@comment-25047329-20150728163645

The Shironeki Sasaki imagined was psychotic, so Sasaki was afraid of him and what he might do if Sasaki lost control.

Sasaki, up until the end of the Auction arc, was in a similar state that Kaneki was early in the first series. He was terrified of his ghoul half because he associated it with mad hungry and brutality, so he sometimes lost control when he used his Kagune too. Sasaki is sort of in a worse state because working for the CCG, he doesn't really have anyone to help understand his ghoul nature like when he was with Anteiku nor his growing mental and emotional problems.

In a nutshell, it's part mental block, part mental illness.