Nobunaga Concerto Episode 5

Saburo and the Oda clan are getting closer to clearing a way to the capital, but the next enemy territory in their path is the Azai clan. The elder Azai is willing to form an alliance with the Oda clan, but only if Ichi, Nobunaga's sister, will marry his son. Being from the 21st century, this condition sticks in Saburo's craw, so he searches for some other way they can become allies.