Myoga, Inuyasha and others in “Unfinished Business”

Master Inuyasha, you haven't been able to unravel the mystery of Tetsusaiga on your own. You tried but you haven't been able to tap into the power that killed a hundred demons in one sweep. But Totsai knows its secret. I think if you take the time to know each other and cooperate, you can awaken and harness Tetsusaiga's full strength.

Inuyasha

There's no mystery. I'll get the hang of it. I just need practice.

I understand you been collecting the Sacred Jewel shards for awhile. Who knows how many demons have multiple pieces of the Jewel? You know how difficult it's been to battle demons with more than one. Don't you want to awaken the Tetsusaiga's full potential in order to defeat demons with that enhanced strength?

Miroku

He does have a point, Inuyasha.

Sango

I think you should at least hear what he has to say.