Koyomi Fueki

Koyomi (コヨミ) is one of the main characters in Kamen Rider Wizard and a Gate who was among those sacrificed for the Phantom summoning ritual. She survived along with Haruto Souma, but lost most of herself to her Phantom making her body anempty shell.

History
Though she survived, Koyomi lost her memories as she is entrusted to Haruto. She has the ability to discern between real people and Phantoms. She currently lives at Wajima's shop when not traveling with Haruto.

Koyomi requires regular infusions of magical energy to survive; without which she collapses and becomes inanimate. To gain the mana she needs, she utilizes the Please Ring to draw it from Haruto, but doing this drains Haruto's magical energy to the point where he cannot fight effectively as Kamen Rider Wizard for some time afterwards.

Portrayal
Koyomi is portrayed by Makoto Okunaka (奥仲 麻琴).