Hidemi is a selfish and frivolous Btooom! player who joins forces with Nobutaka until she is abandoned by him. She has a large forehead and is a cute 19 year old girl. Originally a famous model, she had a boyfriend who was an aspiring soccer star player, who was forced to quit from his career due to an injury. Following their break-up, she promised to keep in touch with him, but after one year without hearing from her, he commited suicide, with his family and several others blaming her for it, what certainly led one of them to nominate her.