A top-tier student who excels in both academics and sports. She is the foster parent of Kaguya, who came from the moon. Overflowing with maternal instincts, she will protect Kaguya no matter what. She is extremely wary of Guest. She loves her friends Roka and Mami. Her favorite idol is Yachiyo. She lives with Kaguya and is the younger sister of Akira Mikado. While she relies on her brother, she finds him a bit difficult to deal with. Female.

A princess who came from the moon. Everyone helped drive the Lunarians away during her graduation live, though she herself was just busy singing for her fans. She is wary of Guest. Usually energetic and full of curiosity. She lives with Iroha and loves her friends Roka and Mami. She loves Iroha even more! Female.

The administrator of the virtual space Tsukuyomi. She produced Kaguya's graduation live and lent her power to drive away the Lunarians. She is extremely wary of Guest. Her persona is an 8,000-year-old idol who can sing and dance. Female. She likes Iroha and Kaguya.

A member of the professional gaming team Black Onyx. He drove away the Lunarians with his brilliant skills. He is hyper-vigilant toward Guest. Iroha's older brother. He cares deeply for his teammates.

A man of few words. A member of Black Onyx who helped drive away the Lunarians. He is hyper-vigilant toward Guest. Noi's older brother.

A member of Black Onyx. He helped drive away the Lunarians. He is hyper-vigilant toward Guest. Ikazuchi's younger brother.

Iroha's classmate. Famous as a beauty influencer. She loves Kaguya, Iroha, and Mami. She is incredibly wary of Guest.

Iroha's classmate. Famous as a gourmet influencer. She loves food, Iroha, Kaguya, and Roka. She is hyper-vigilant toward Guest.