Mumon: The Land of Stealth / Shinobi no Kuni

Once upon a time, there is a lazy man named Mumon who loves joining competitions to get gifts for his wife. Besides, he is the best Iga Province Shinobi. One day, to get a gift, Mumon killed a shinobi from another province—different clan/family. He does not realize that his deed affected to new big war between Shinobi Corps of Iga Province and Nobukatsu Oda Corps of Ise Province.