Sorano Katsuri

Background
Her clan, the Katsuri clan was a clan from Kumogakure. She was a member of it and lived fairly normally. When she was 7, The Raikage saw her clan as a threat as their shinobi were rapidly growing and becoming stronger and forced them to move out of the country. This caused the majority of the clan to revolt against the Raikage, Her clan was slaughtered in one night when they attacked Kumogakure. The children stayed behind, when they heard this news, Sorano fled and trained as a rouge.

Mono
Her clan has passed down a Kekkai Genkai called "Mono" which is the ability to change a object or a living being on an atomic level. The overuse of this can cause drastic drawbacks such as losing their sense of sight, losing use of a body part. They vary from person to person.