Tsukuyomi reigns as a major deity within the divine hierarchy, holding the specific position of the Moon God. This character's primary narrative role arises when Mayu's mother orchestrates an arranged marriage between Mayu and Tsukuyomi. Facing Mayu's resistance, Tsukuyomi facilitates her forcible taking to ensure the marriage ceremony proceeds. This act triggers a coordinated rescue mission by Yuzu, Gonta, Sasana, Meiko, and allied deities to retrieve Mayu from divine custody.

As the Moon God, Tsukuyomi stands as the second-most important deity in the celestial order, signifying substantial authority and influence over divine affairs, particularly matters like arranged divine unions. Visually, the character is distinguished by glasses and a ponytail, consistent with divine designs in the series. Personality-wise, Tsukuyomi demonstrates a readiness to enforce celestial mandates, evidenced by the acceptance of the arranged marriage and the subsequent capture of Mayu, though direct interactions or dialogue remain unelaborated.