User blog comment:Hitsuji Mamoru/Servant Creation Room 2 : Guess of the Who/@comment-30314236-20170310191146/@comment-30314236-20170311164837

I guess my reasoning about why he's an Assassin is a bit farfetched. It comes from the weapon he uses, a type of knife, and the nature of it.

However, I haven't said he's not knight. Actually, he is.