The entire purpose of the Blood Shadow was to steal power by killing or possessing others and bring that power back to the Bleeding Phoenix, but Yerin hadn’t allowed hers to escape. Yerin was known to be a genius in her hometown before everyone was slaughtered by a Blood Shadow belonging to The Bleeding Phoenix. She cherishes his memory, but she is her own self.
She lost her master The Sword Sage at about age 16 or 17. She lost her entire family at about age 7 to a hungry Blood Shadow (see Skysworn). She despises her Blood Shadow - a piece of the The Bleeding Phoenix - as it has murdered many innocent people, including her entire family. She cannot read or write, but she is intelligent and frequently comes up with dry-as-dust analogies, metaphors and similes. Her words are few but honest her speech is habitually pithy and straightforward, but not mean-spirited. She is an intense person, brave but not showy, without an ounce of self-pity. However, once she gives her trust, she is totally loyal, especially to Lindon. Also, after her master was murdered in Sacred Valley she’s been suspicious of supposedly kindly strangers. Now that he’s dead, she clings to his teachings and his memory. Yerin is /was dedicated to her beloved master, the Sage of the Endless Sword.
MOUNT AND BLADE WIKI TOURNAMENTS SKIN
Her skin is covered in thin white scars from practicing the Endless Sword technique. Initially, she wears a tattered black sacred artist's robe with a thick red cord tied around her waist. She cuts her own hair with sword madra in a perfectly straight line to minimize its interference in combat. She’s scruffy, like she has spent the past weeks camped out in the woods. In book 1, Unsouled, Yerin is very thin, and shorter than Lindon. In Uncrowned, book 8, Naru Saeya suggests she is about 20. She thinks she’s about a year older than Lindon. Yerin doesn’t know her exact date-of-birth, because of her traumatic childhood.
Yerin herself wasn't sure how old she was,