Genzo Kurita was born on November 3, 1926, in the Ogachi District of Akita, Japan. He grew up in a rural area during a time when Japan was facing many struggles. His childhood was marked by the effects of World War II, which ended in 1945 when he was a teenager.

Little is known about Kurita's family background. There are no public records detailing his parents or their occupations. It is also unclear how he performed in school or what interests he had as a child.

As he grew older, Kurita went through various jobs in his community. However, there are limited details about his employment history or social interactions with peers. Kurita's early adult life was not well documented, which leaves many questions about his personal relationships and experiences.

In February 1948, when he was 21 years old, Kurita committed his first known crimes.

Genzo Kurita committed a series of murders between February 1948 and January 1952. He first killed two of his girlfriends in February 1948. In August 1951, he raped and murdered a 24-year-old woman next to her baby. He went on to rape and murder another woman, aged 29, in October 1951. After this murder, he threw her three children from a cliff called Osen Korogashi, and one of the children survived.

On January 13, 1952, Kurita killed a 63-year-old woman and her 24-year-old niece. After committing the murders, he had sexual intercourse with the deceased niece's body. Police later found his fingerprints at the crime scene. Kurita was arrested on January 16, 1952, after the killings.

He faced trial later that year, and on August 12, 1952, the district court in Chiba sentenced him to death for the last two murders. On December 21, 1953, the district court in Utsunomiya sentenced him to death for the other six murders. Kurita appealed his sentences, but he withdrew his appeals on October 21, 1954, citing mental instability. He was identified as neurotic and a danger to himself, even causing self-harm while expressing fear of dying.

Kurita was executed by hanging on October 14, 1959.