Ishigami Kouko

Ishigami Kouko (いしかみコウこ Ishigami Kōko) is the deuteragonist of Spirit Circle.

Personality
Kouko is a relatively average student, similar to Fuuta. She is normally calm and happy.

However, her personality has mixed with her original incarnation Koko's. Due to this, she is more arrogant and rude towards Fuuta, which stems from her hatred for Fortuna. She also speaks more politely.

Appearance
Kouko has black hair and gray-green eyes. She is relatively the same height as Fuuta.

Her most prominent feature is the cross-shaped scar on her forehead. While she only received a single mark in an accident, she purposefully gave herself the other part in order to better remember her past life and memories.

Relationships
Okeya Fuuta: Kouko's enemy and later friend. Their relationship is very complicated. Kouko initially seemed to hate him, seeing Fuuta as her enemy. However, she eventually came to see him as his own person, and begins to care about him as well. She also begins to fall in love with him, and is later confessed to by Fuuta in Chapter 30. After their final battle, their relationship stagnates. However, just before Kouko moves back to Tokyo, Fuuta reconciles with her, and Kouko leaves him with a kiss on the cheek.

Koko: Kouko's first incarnation.

Stona: Kouko's second incarnation.

Raven-haired Witch: Kouko's third incarnation.

Roca: Kouko's fourth incarnation.

Iwana: Kouko's fifth incarnation.

Lapis: Kouko's sixth incarnation.

Shakujii Kosuke: Kouko's seventh incarnation.

Etymology

 * Ishigami means "stone" (いし) (ishi) and "gods" (かみ) (gami).
 * Kouko means "mineral/ore" (コウ) (ko) and "child" (こ) (ko).

Trivia

 * Although she states that her hobby is playing games on her phone, she is never physically shown using her phone.