In 2023, more than 700,000 crimes were committed in Japan, which represents an increase of 17% compared to the previous year. Rising prices are one of the answers, while wages do not increase.

Difficult economic climate is also straining relationships within couples and families. There are countless Japanese people who are so depressed that they have decided to die, but are unable to commit suicide. So they choose to commit "indiscriminate" or "undifferentiated" murders. They set buildings on fire, stab passers-by in the street or on trains.