A Chinese salesman is making a delivery to Nekohanten. Cologne spots something among the salesman's goods, and picks it up. I didn't order this.
Shampoo overhears the conversation.
It's a special mushroom used in magic. Cologne chops up part of the mushroom and makes some gyoza out of it. Cologne offers one to the salesman, who accepts it and eats it. Here, try one. I shouldn't have eaten that.