Assassin (Sasaki Kojirou)

"I said that they may leave. Would you make a liar of me? My only duty is to stand watch at this gate. I allow entry but leaving is something else. Your head lacks elegance, but I shall satisfy myself by claiming it tonight."

- Kojirou's threat to EMIYA

Assassin (Sasaki Kojirou) is a Servant of light novel Fate/stay night.

Fanon Wiki Ideas So Far

 * Fairy Tail vs Fate/Stay Night

Possible Opponents

 * Suzune Amano
 * Akame
 * Kagura Mikazuchi
 * Kurome