Tokyo Nichi Nichi Shimbun

In 1911, the paper merged with Osaka Mainichi Shimbun (大阪毎日新聞, lit.

Osaka Daily News) to form the Mainichi Shimbun (毎日新聞, lit.

The two newspapers continued to print independently until 1943, when both editions were placed under a Mainichi Shimbun masthead.

In 1937, the Osaka Mainichi Shimbun and its sister newspaper, the Tokyo Nichi Nichi Shimbun, covered a contest between two Japanese officers, Toshiaki Mukai (向井 敏明) and Tsuyoshi Noda (野田 毅), in which the two men were described as vying with one another to be the first to kill 100 people with a sword.

Therefore, according to the journalists Asami Kazuo and Suzuki Jiro, writing in the Tokyo Nichi-Nichi Shimbun of 13 December, they decided to begin another contest with the goal of 150 kills.

First edition of the Tokyo Nichi Nichi Shimbun on 21 February 1872
Mukai at Sugamo Prison after his arrest by the U.S. Army
Noda at Sugamo Prison after his arrest by the U.S. Army