In April 2015, an extremely cruel murder of minors occurred in Chiba, Japan. On the way, he was caught up by high school classmate Yuasa Naimi and three other men and was taken to a black sedan.

(Original title: A classmate borrowed the graduation album and refused to return it. The underage girl hired a cruel bury her alive)

In April 2015, a very cruel minor murder occurred in Japanese Chiba . On December 11, 2018, the Supreme Court of Tokyo, Japan announced that it would uphold the first-instance judgment of the former Chiba Court for the life imprisonment of the mastermind Yuasa Mi.

On the evening of April 19, 2015, the 18-year-old girl Noguchi Ai Nai went shopping with her friend. On the way, she was caught up by high school classmate Yuasa Naimi and three other men and was taken to a black sedan. Then, Noguchi, Yuasa, Idei and Nakano changed into another white sedan. In the car, Ideo and others tied Noguchi with a rope prepared in advance, stuffed the socks into Noguchi's mouth, and stuck them with tape to make them unable to resist. Finally, Noguchi was taken to a field near Iiden's relative's house, where there was a large pit about 1 meter deep that Nakano had dug. After everyone snatched Yekou's money, they put her head on the bag and buried her cruelly alive.

Two days after the incident, Chiba police received a report and arrested the four suspects after investigation. The mastermind Yuasa Naimi and the deceased Ai Naigaki are high school classmates. The three male suspects are Yuasa's friends, namely the 16-year-old driving boy, the 20-year-old Yuhui Iide and the 20-year-old Shota Nakano.

At the time of the incident, Japan's adult age was still 20 years old. Because the mastermind Yuasa Narimi was underage when she committed the crime and the murder was extremely cruel, the case attracted social attention in Japan. Shockingly, Yuasa confessed that Noguchi worked in a custom shop in private and once ordered a champagne tower of 1 million yen (about 60,000 yuan). Of these, 500,000 yen have been paid, and the rest is on credit. Before working in a custom shop, Noguchi, who was asked to prove his student identity, borrowed the graduation album from his classmate Yuasa, and did not return it until the incident occurred. Yuasa was very dissatisfied with contacting Noguchi without being paid attention to him. In addition, there was other financial relationships between the two, so Yuasa decided to hire a murderer to kill Noguchi.

On March 10, 2017, Chiba District Court announced the first instance that Yuasa was sentenced to life imprisonment. In response, Yuasa argued that she did not take action at that time and strongly advocated that she was not guilty. On December 11, 2018, the Tokyo Supreme Court announced its support for the Chiba Court's verdict for life imprisonment.