[kagato3]

Originally Posted by Nvis

I'm a little confused about the conversation between Saegusa and Jumonji about the match with Masaki and Tatsuya.

Someone clarify? Like the higher ups aren't going to acknowledge someone not from the Ten Clans that beat Masaki?

It looks bad if a "nobody" beats someone that is the next head of one of the ten clans. Because the relationship between the Yotsuba and Tatsuya is hidden him winning is seen as somewhat undermining their authority as they exist in part to keep all the rest of the mages in line as the leaders of Japan's magicians and therefore are seen as the Strongest of mages. Jumonji's solution is marry him in to one of the ten families.

Originally Posted by from the official us anime site

The ten master clans
The most powerful group of magicians in Japan. Out of twenty-eight families whose surnames all start with a number from one to ten, ten are elected every four years at the Ten Master Clans Selection Conference, and they alone are granted the right to this title. Although they stay strictly behind-the-scenes in terms of politics, with their personal might as leaders of Japan's magicians, they command a considerable number of assets. The current Ten Master Clans are the Ichijo, Futatsugi, Mitsuya, Yotsuba, Itsuwa, Mutsuzuka, Saegusa, Yatsushiro, Kudo, and Jumonji families. Most notably, the Saegusa family, which has produced numerous magicians of remarkable skill, and the Yotsuba family, whose leader is seen as the most powerful magician in the world, are regarded as the two most influential of the Ten Master Clans. Coincidentally, each of the numbers between one and ten are represented in the current lineup – something which has never before happened since this hierarchy was established.

Originally Posted by Death Usagi

Who is Masumi...

that is clearly a typo of MaYumi