I totally don't understand what Shuirou said. In my memory, I can see clearly that is a knife. Although in my memory, I don't know how I got this knife.

Shuirou seemed afraid of the knife. I patted her on the shoulder to calm her down. She whispered, "I don't know how to tell you, because I don't know how he got the knife. When we met, he already had the knife, but it was strange.

"Strange?"

I didn't understand Shuirou's words at once. She said earnestly, "The knife is the top tool, but the problem is, there seems to be something in the knife. Once, I tried to touch...