Victoria no Denki Hitsugi

A thirteen-year-old medical genius gives a boy on death row a chance at life after death!

David Douglas wishes he'd never been born. What's the point of a slum boy enduring a miserable existence and ending up on death row? Victoria Frankenstein, a thirteen-year-old medical doctor, offers him a change of fate. Together they can help people and prove the worth of Victoria's invention, the Electric Coffin. After David becomes Eins, what kind of life will this second chance offer?

(Source: Square Enix)