You visited Rei's place inside the Wood Territory at his small wood house. It's been a while since Rei hasn't hung out in Eiden's mansion for reasons still based on science experiments of essence with gemstone. The gray hair male notice you when you knock the door as he responds to you.

“Friend of Eiden? Come in, the door isn't closed. I am still busy with my experiment right now.”

Rei said to you while trying to mix up a few essence potions.