Saeko

Saeko (サエコ, Saeko) was the wife of Kawaguchi Metal Fittings Corporation's manager, who fell victim to Spontaneous Human Combustion and became an Infernal. As an Infernal, Saeko retained most of her feminine features; having a lean figure and flowing hair that were formed of flames. She had black charcoal-like skin, with parts of her body enveloped in flames. She has no mouth and solid-coloured eyes with black sclera. As an Infernal, Saeko showed peculiar intelligence. As usual to Infernals, she was driven by rampage and chaos, and burned everything in sight. However, she was protective of the Kawaguchi Metal Fittings Corporation, desperately trying to get the Fire Force out of it when they confronted her. This could be due to her husband's affiliation with the building and having a personal affection towards it.