Protesters have camped in front of the Minnesota governor's residence since 32-year-old Philando Castile was fatally shot by a police officer.
Kyzr Willis had been reported missing from Carson Beach in South Boston on Tuesday.
Practically all types of firearms are outlawed in Japan, which has practiced strict gun control since its post-feudal era in the late 1800s.
The country's morality police enforce strict laws that prohibit women and men from socializing with members of the opposite sex.
Cal Fire said the 8 men were hungry and thirsty after being rescued from the south side of the fire near Big Sur.