The cool autumn wind breezes through the dark green leaves of the trees surrounding the Ryudou Temple. At the top of the steps, a graceful warrior sits at the top of the stairs. His blue hair follows the wave like a bird as he watches over for intruders.

His name is Sasaki Koujiro, or so it may seem. Rather, it was what he was summoned to be. IN reality, there was no such person. Therefore, to summon such a fictional hero, there had to be loopholes in the strict wording of hero. In his case, the hero "Sasaki Koujiro" was treated as a title given to those who could fit his criteria. That is to say, the one who could perform his "Reversal Swallow" and acquire the same level of skill that is to be said of the legendary master. However, in reality he truly was not this person; he was just another swordsman who lived in the mountains and attained this spectacular ability.

It was through his Master's ability that he was able to be pulled from the Throne of Heroes, from which he had not come from. Through all types of realities and space-time continuums, he was summoned. It wasn't something that he could really contest. Even though it was impossible. Even though it was unrealistic. Even though it was fantastic. Even though perhaps only a few days ago, he was training in the mountainside of Japan hundreds of years ago. The truth remains that he is here now. Having understood the rules of the Holy Grail War, he promptly took his place as the watchman of the temple, hopefully expecting a worthy fight.

"Oh, so you are still here," said a dark and frail voice behind him.

He took his stance, ready to cut down anything in his path. The shadow suddenly appeared behind him, causing him to fall off his guard.

"If you are still concerned about guarding the Servant Caster, then you have no worries. I have already taken care of her. However, I have interest in you, Assassin. Or rather, should I say, the False Servant Sasaki Koujiro."

Assasin lowered his blade in resignment. This would mean that his job was over, that he would soon disappear due to the lack of magical energy channeled towards him. This was such a boring predicament. He thought he could at least get a good fight before heading back to his normal life.

The shadowy figure smiled, "No, you won't return. Most Servants would, of course, return to the Throne of Heroes after being defeated or vanished, but this isn't the case for you. You, Koujiro-san, are still alive. Your heart beats like a normal man, not like a heroic spirit of this world. What keeps you breathing is not the Earth, but your very existence."

"Wait," he sudddenly muttered nervously. "What are you talking about? I won't return back to my normal life after this? What's going to happen to me?"

She put her finger to her mouth, biting it in thought. "Well, if you're still a normal human being (although extremely powerful), then if you disappear from this earth, you'll just disappear."

He became extremely angry. It wasn't even his own fault that he was in this situation. He had a normal life and it was suddenly taken away from him. Assassin cursed himself and staked his sword into the ground. The shadowy figure smiled and laughed at his anguish.

"SO what are you going to do now? You'll need a new Master soon, or else you'll just disappear. You'll die, having not even left any mark of on the earth, not even as a heroic spirit. "

He looked up, his eyes in a faint sense of depair, yet still smiling. "I suppose this is the part where you offer some kind of deal to me, right?"

"Yeah, pretty much. If you work for me, I'll make sure you have fun. You'll be able to fight all the Servants, like Saber and Archer and Lancer and all that. Not only that, but I'll even give you cheat codes so your parameters will heighten up a little bit, since you'll probably be a little bit more like Assassin."

Assassin stood up, his head leveled high and looking towards the full moon. This reeked of evil and twisted nobility, but this was the only chance he had at living the life he wanted. In reality, it didn't matter what side he was on. Warriors don't need a side; they just need an enemy.

The shadows soon surrounded him and he fell into a sea of blackness. He could sense all the corruption, but it didn't affect him the least. Of course, this would be incredibly toxic to those with noble causes, but he was still a human being, unaffected by the black shadow. After all, in his time, entire villages were consumed by this evil. He let himself go, his body covered in darkness.

The dark figure smiled childishly, "Well I've gotten another Servant, so now we'll see that goes. Too bad we let another one go. Maybe I'll go for Saber next."