Fgo's Heroic Spirit Appears in the World

You said your name is Mash Kirilet and you are my heroic spirit? You said the blond 250-year-old boy who I just pissed off is called Gilgamesh? ! You said that the person who was bragging with me just now was called the old man of the mountain? ! ! Then I guess I should be dead. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.