Secret Tea

Exploration Stage: Bamboo Grove
From: Detective
Description: I need to find out who killed the woman who became a vengeful spirit. Otherwise, I will remain haunted for the rest of my life. It happened a long time ago, but I'm sure the city will help me find a clue. In the past, various poisons were used to kill people. So maybe that grudge was poisoned. Let's look for old items with poison inside.
Completed: Look at this. We found a tea kettle with traces of poison inside, and in relatively good condition. I'm no stranger to poisons. The tea in this jar was poisoned in a special way. Oh, the grudge is shaking her head. I guess she didn't taste this gyokuro.