|Hinata Souichirou日向 宗一郎|
|Role||, Father, Husband, Medical Doctor, Researcher|
|Engages in||, Alcohol Abuse, Drinking, Genetic Research, Mass Murder, Suicide, Supernatural Cloning|
|Subject of||, Death|
|Visual novels||Side character - Himawari|
|Voiced by||Ebara Masashi|
Youichi's biological father. Adopts Aoi shortly after the birth of his son. Has a strong resolve in the preservation of humanity, spending the entirety of his life's research on finding the means to do so <hidden by spoiler settings>, even going as far as killing over 500 people in order to prevent the Lunar Virus from spreading. Cares greatly for his family and pertains a slight alcohol problem.