Sahara Susugi

Sahara met Gertrude while visiting an abandoned house. She is usually calm and level-headed, and often helpful. She visits the house daily to see her friends Gertrude, Puppen, and Marriotte. When the blank pages of the recipe react to her, Curtis suspects Sahara has some connection to the missing recipe, which she denies. However, it later turns out that she does indeed have a connection...

It turns out that the recipe is on her bones and that to remove it form there is would be killed. It was placed on her by Gerturde's creator whose soul had taken over her older brother's body. He acts as an older brother for her only to protect the recipe so he can later use it to achieve his own aims.