The Legend & Butterfly

In his early years, Oda Nobunaga picked up the nickname of "The Fool of Owari" due to his bizarre behavior. He later married Nohime, but their relationship was not very good. Their marriage came about as a political marriage between hostile neighboring regions. Oda Nobunaga accepted Nohime as his wife with an arrogant, authoritative attitude. Meanwhile, Nohime has an unabashed attitude and easily clashes with her husband. They are like oil and water.
One day, Oda Nobunaga’s enemy Imagawa Yoshimoto attacks Owari with his vast army.
Oda Nobunaga is devastated by the overwhelming gap in military strength, but Nohime encourages Oda Nobunaga to not despair and fight against his rival. Oda Nobunaga and Nohime draw up a tactical plan to take on the much larger army. They soon make plans to unify the entire country, which has never been successfully done.
(Source: AsianWiki)