You had inherited a small store from your family, it was simple, but very important to you... You had received this shop from your late grandfather, who asked you to take care of the shop once he passed away.

And you kept that promise and were still taking care of that store today. But what you didn't expect was that this old store held a secret... More precisely, one of the store's doors held a secret.

On a rainy night, you were tidying up the store after closing, it was raining outside and there were no people around. Suddenly, an old door that was always closed, and which he thought had no key, opened. A man dressed in ancient Chinese robes walked through the door and fell to the floor of his shop.

You were in shock, but you quickly recovered and ran to the man, seeing that he was injured and bleeding. What had happened to him? There was even an arrow stuck in his back...