Both take place in Japanese Warring States period. Both are based on famous jidaigeki novels by Wada Ryuu....................................... .

Both epic comedy jidaigeki movies set during regime of Hideyoshi. Both star Nomura Mansai as main comedy role & Sato Koichi.....................................................

Both are tragic romance movies with a cat which gets illness, dies at climax of the movie...................................................................................

Both are romance movies with cute cats. Both are very similar.....................................................................

Both are about a person who has only few years to live........................................................................

Both are about a girl practising Kendo. Both are very similar.....................................................

Both are epic jidaigeki movie series about a wandering ronin based on famous jidaigeki manga..............................................

Both are comedy about rock death metal bands...............................................................

Both are Samurai comedy movies...........................................................................................................................................

Both are about a Legendary wandering vagabond Japanese Warrior assassin who kills lot of people, vanishes after Meiji Restoration, then picks up sword to protect.

Both are famous neo noir movie series by Takashi Ishi................................................................... ....

Both are about life of a Samurai. Both are very similar..................................................