My grandfather has an autoimmune disease called MS.
It is your autoimmune system attacking your nerves which leads to paralysis, speech difficulty, and vision problems.
A few years ago, I had a school project to make something to help people with medical disabilities. I decided to make an arm prosthetic to give back functionality to his arm and hand. It broke in half. Ever since that project, I have wanted to do a better version of this project, and OI was the perfect opportunity.