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Kokuro, the Child Emperor's older sister.

• Her official age is unconfirmed but I set her around 20's

• She works as a private detective in the hometown of her grandparents, but sometimes the police require her assistants in a few difficult cases since she's reliable

• Because Kokuro has the sixth sense, sometimes she does side jobs of exorcism. Her ability ranges from her being able to see entities to touching them if she wants to.

• Isamu has a weak energy spirit since a baby so Kokuro is fiercely protective over him, often casting away bad ghosts that try to get their hands on him

• Her grandparents own a dojo that teaches naginajutsu

• Kokuro doesn't like overly sweet stuff, and she usually sucks cola flavoured lollipop

A bit lore of her and Zombieman:

• Kokuro's intelligence in solving small crimes since she's in high school granted her a special permission from the police to join in mystery cases

• One time she discovered an illegal underground laboratory and was about to report it to the authorities when Dr Genus came and tried to stop her

• In self defence, she took him down with a naginata, destroying the lab in the process.

• It wasn't the real Dr Genus, only one of his clone

• She caught a glimpse of someone running away but thought it was an entity and ignored it, opting to escape and get the police first