Naomi is Muteki's older sister. She hosts and stars in her personal paranormal investigation channel, "Scoop in TV," traveling to explore and report on occult phenomena and supernatural occurrences, focusing on uncovering mysterious events.

She lives in Neo San Francisco with Muteki and their grandmother, Sarah. Naomi belongs to Sarah's family lineage, which also includes Muteki as the great-grandson of Rin Yuki, the original Muteking. Her role is defined by her identity as Muteki's sister and her paranormal reporting activities.