The Mysterious Servant (A Fate/Stay Night Fanfiction)

Vincent Agathe, the Heir of Agathe family, most likely, the only Agathe left. He is known for his distant, ignorance, cold attitudes by most his classmates. He never think he would involved with something big that might cost his own life. It was until one day, he found a book on his parent's room when he was cleaning the room, inside the book, there's an instruction about some Summoning Spell, and so, he was curious about it and decided to try it out.

Without him knowing, he's about to feel the feelings he lost before.

(Slow update sorry.)
(I do not own Fate/Stay Night UBW, I only own my OC.)