The Koizumi clan can trace its lineage back hundreds of years to the daughter of the Sage of Six Paths, a mysterious woman named Chiasa. Not much is known about her except for her meeting with Kameyo Koizumi, the original inheritor and first of the Koizumi clan. It is said that Chiasa was deeply depressed due to the death of her father and the feuds of her brothers. Some say she had the foresight to see the long blood-soaked history of the clans that would arise from her brothers, others say she was disturbed by the way her brother’s fought but, for whatever unclear reason, she decided to end her life to send a message to them both and the future generations.