"It's no longer a secret to dig all the secrets out of that grave," I said.

"I know that, so we need to find a way for the guy to voluntarily let us dig the grave." I pondered.

"let's dig it voluntarily. How could this be possible? That guy is not a fool. How could we open his own grave".

"there is no impossibility, as long as you are willing to use your brain, there must be some ways." XIII didn't know where to come out, she said, holding a pure white kitten in her hand.

"eh, isn't this kitten at home? How did you come here? Thirteen, you shouldn't...