Chika

As a "God Candidate" ranked A, she is a first-year high school student who attends the same school as Goro. She is the sole member of the science research club, having remodeled the clubroom exclusively for herself in order to immerse herself in her experiments. Naturally curious and spontaneous, her actions often bewilder Goro. By keeping her smartphone turned off, she conceals her identity as a God Candidate while gathering information.

She once attempted suicide due to dissatisfaction with her parents, but was saved by Ryo. Thanks to this incident, she is already acquainted with both Ryo and her older brother Kyo. She is also revealed to be the person in the gas mask who attacked Goro and the others in the science lab. She confronts Honoka on the rooftop of the hospital where Goro is being treated but is defeated by the awakened Honoka. After her defeat, Honoka seeks her cooperation, and she agrees; however, she is immediately attacked by Kyo's ability. Afterwards, she is healed by Honoka.

Her ability, "Entropy Mask," allows her to control fire. She can manipulate the reactions of elements and combustibles, inducing combustion through oxidation, causing metal to rust, and even triggering detonation phenomena, making her power extremely lethal. By manipulating reaction heat, she can also unleash deadly attacks against living beings.