|Titles||"The Siscon Sergeant"|
"No Sister, No Life"
|Franchise||To Aru Majutsu no Index|
|Likes||His sister, his friends, pretty women|
|Statistics and Parameters|
|N. Phantasm Rank||C+|
|Skills and Noble Phantasms|
|Class Skills||Independent Action C|
Item Construction B
Territory Creation C
|Personal Skills||Double Summon C|
Backstabbing Blade A
Assassin's identity is that of Tsuchimikado Motoharu (土御門 元春, Tsuchimikado Motoharu). He is an inhabitant of Academy City and a Level 0 Esper. He is considered to be a useless high school student and thus parades around the city trailing pretty girls and doting over his younger sister, Tsuchimikado Maika.
In reality, he is an operative of Necessarius and, for a time, GROUP. He is formerly a Magician who has taken up the role of a double agent between the Science and Magic side solely to protect his younger sister from the crossfire between the two factions.
Little regarding his true affiliations or motives are known beyond this, though he is acquainted with Aleister Crowley and has played a notable role in the events of his world. However, his intention to protect his sister has ultimately lead him to deceive every faction he has come across and, if it were for the sake of his goals, he would not mind making an enemy of the world.
His accomplishments are such that he has been recorded in the Throne of Heroes. Although a simple human, the nature of his feats and abilities have granted him with a very peculiar skillset as a Servant, and his abilities have proven to cause even the greatest factions some worry.