Uchii Tatsuo operated an art museum called Matsutake Drum. Although called an art museum, it was actually a private gallery that mainly profited from the resale of art pieces. They also rented out space for private exhibitions and auctions, and had quite a reputation in the Hirarano art circle.
By the time Nanahara Takeshi and his group arrived at the Matsutake Drum Art Museum, it was almost six o'clock, and the sky had already turned dim. The staff at the entrance reminded them that the museum was about to close, that ticket sales had stopped, and only after understanding their intentions did they realize, pointing out the side entrance and allowing them to enter from there to find the curator.
