Omi Takahata(高畠 青海 Takahata Ōmi) is a university student and Koji Tonoh's girlfriend.
She is voiced by Hyo-sei (credited as Erena Kaibara).
Since Fuminori Sakisaka's accident, she has become worried for Yoh Tsukuba's sake. After Fuminori blatantly rejects Yoh, Omi goes to Fuminori's house to confront him, but is killed by Saya there and her dismembered remains are stashed in the refrigerator as food for Saya and Fuminori.
Omi is a young woman with dark blue hair and eyes to match. She wears a white button-up shirt showing some cleavage, and green pants.