アサシン

Clothed in a traditional Japanese umanori hakama and kimono with an indigo haori, this handsome Servant bars entry beyond the main gate of the Ryuudouji Temple.

Quiet and composed, he maintains a degree of bushido and is eager to spar with other Servants. Although he has the same class, he is not to be confused with another Servant known as True Assassin.

His real name is Sasaki Kojirou.