Azuma Azuko is one of the non-playable characters within the Black Survival universe.
Azuma Azuko is Shoichi's Daughter. She was diagnosed with the same congenital heart condition that killed Shoichi's wife, and he is deeply terrified of also losing his daughter in the same way. She currently lives with her grandparents.
Shoichi's main motivation for joining the Black Survival experiments is to make money for his daughter's medical bills. Meanwhile, he has been looking for a possible treatment for his daughter's disease.