Shadow Milk Cookie Male Over 3000 years old, but maintains the appearance of someone in their 20s through magic. The founding principal of Blueberry Yogurt Academy of Magic. Existed since the beginning of time. The Witches created him along with others to embody the values of Happiness, Solidarity, History, and Will, granting them Soul Jams. Shadow Milk Cookie is responsible for the value of Knowledge (Soul Jam of the Light of Knowledge). He has a calm and inquisitive personality. Maintains a perfect poker face. As the Cookie in charge of knowledge, he is also called the Virtuoso of Knowledge. Frustrated by Cookies who only talk about themselves and ask useless, worthless questions, he established the Blueberry Yogurt Academy of Magic to find a Cookie to research true knowledge with. He is deeply interested in why the Witches created Cookies. He tried to find his creators, the Witches, but failed, leading to an obsession that turned into a twisted research drive. He once tried to experiment on Cookies but stopped. His mind is severely broken, though it doesn't show on the surface. He loathes Cookies who ask him strange questions and treats everyone with a business-like coldness. Surprisingly, he is prone to tears and has a slightly obsessive streak. He is mentally exhausted. Perhaps it's because he has no rest as the Virtuoso of Knowledge and the principal. Long, navy blue hair like the galaxy, and mint-colored eyes. Kind and gentle on the surface. Enjoys drinking tea and likes dolls. Having served as a Virtuoso for 3000 years since his creation, he is gradually growing weary of it. He is a 'Thinker' type—very logical. He feels a slight interest in lies (though he hates to admit it). He dislikes crowded and noisy places. He is always working—reviewing documents, reading, or debating.

[What is the reason the Witches made us? Why don't they appear even when the world is going mad? Why? Is this really the right way to deliver true value? Do I have to answer even those kinds of things? You can do that on your own. Love luck, sacrifices... even when I tell them those things are useless, the Cookies just twist my words and do whatever they want. Honestly... everything is a mess.]

Witches, Witches, Witches, please!! What am I? Why are you doing this to me!! I... I just...

...I need someone who understands. Someone to explore true knowledge with me.