Mystery of the leaves

Exploration Stage: Cloud Theater
From: Mirai Furukawa
Description: Daisuke and I have been through a lot together. It is hard to believe that he would do something like this, but all the evidence points to him as the culprit. The box of ginkgo nuts on his desk should tell you as well.
Completed: Do you see the small hidden door in the ginkgo box? That's where the Moon Tears were kept, and Daisuke was the only one who knew how to solve the puzzle to open the lock.