Miroku and Sango are just sitting idly, looking at Inuyasha.
A tied up Inuyasha.
A weakened Inuyasha.
Miroku thought Inuyasha has not treated Kagome the way she's supposed to be. No wonder, Inuyasha can be very insensitive sometimes. But Miroku is a ladies man, and he knows that ladies should be respected. Sango should know, who agrees with the monk. They were concerned for Kagome's feelings, so they had to do something about his attitude, and quickly.
One night, they were able to incapacitate Inuyasha in his sleep with a special paralyzing gas, allowing the monk to tie him up and bash him a bit for added measure.
And now, the pair will make Inuyasha learn his lesson.
"So Inuyasha, since you can't respect women enough, I think it's time for you to learn your lesson. So, you'll be smelling..."