The relationship between Japan and Germany during World War II was a complex and nuanced one, with the two Axis powers initially forging an alliance but their partnership evolving over the course of the conflict.

At the outset, Japan and Germany were united by their mutual opposition to the post-World War I international order and their desire to challenge the global dominance of the Allied powers.

In 1936, they signed the Anti-Comintern Pact, which was aimed at combating the perceived threat of communism.

This was followed in 1940 by the Tripartite Pact, which formalized the alliance between the two nations and Italy, creating the Axis powers. - https://germanyfocusguide.com/blog/were-japan-and-germany-allies-in-ww2/?unique_id_9jgwp0wa

Unraveling the Complexities of the Japan-Germany Alliance in WWII