[There is, he won't deny that. There's a lot to learn for sure. He and Tenka have been doing their best as well to learn the technology and the advancements they had missed; they may not be the best teachers, but they'll try their hardest for Kousetsu as well.

Maybe they can all learn together.

As for the rest, well...]

...Someone who does not treasure his sword does not understand the purpose it serves. [as far as he's concerned, they don't deserve to be called masters. Sousei has a lot of bad blood between him and the rest of the Abe family without a doubt--but nonetheless, the Abe family sword is a sword that is the same as it was 600 years before, and nonetheless he treasures it as an important family heirloom...and as the sword that has saved his life multiple times, of course.]

Mine has saved my life and the lives of the people I have sworn to protect many times, and will do so again in the future.

[It's his sword that will cut down the Orochi--he knows that much as fact, even if he's not the one wielding it at the time.]