It's been a while

"Who is the person that knows the way?"

"Truth be told this is just a guess, I'm not really sure of it. Still, there should be a couple of people with the knowledge that you seek."

"I understand, so can you tell me who they are?" Valdel nodded his head as he asked.

"One of them is actually here. She's the one Ren came to meet." 

"Oh, so the Demonic Fox knows where the entrance to the underworld is located." 

"Supposedly, she might possibly know where it is at. Since the Guardian is linked to the tree of life, which knows everything that goes around in this world. It is possible that the tree has provided lady Tsukiko with the knowledge. You could ask her, but I'm not sure if she would tell you."

"Then just in case who the others that would know about the location of the entrance?"