Nagamasa Azai

He was introduced in episode 3 as the cocky and opportunistic Daimyo of Oumi, who, in the said episode proposes an alliance with Nobuna on the condition that she marries him, which she nearly accepted and eventually turns down the offer. In episode 7, he renewed his proposal to Nobuna because he cannot return home for fear of being embarrassed, only this time there are no strings attached for forming an alliance and he gets to have Nobuna's sister, Oichi - who unknown to him is actually Nobusumi dressed up as a girl to be his bride.