The demon triad was a decent but forgettable set of villains during the show.
They all fight individually, the first being Miyuki. Being beautiful and female made Kuwabara hesitant about fighting at all.
Yusuke used his hands to figure out that she was really transgendered. And somehow that makes it okay… That wasn’t the first time Japan media endorsed transphobic violence in the 1990’s. Hopefully, they’ve learned better.
Inmaki was the next foe and he was pretty tricky. He could turn invisible.
So Yusuke used a technique that he could not dodge even with invisibility.
One of the few times he used his brain in a battle.
The final one was Gokumonki. A very large brute, he was taken down quite easily.