He's eyes won't have been drawn there if she didn't cover her chest in the first place!

How sheltered does a person have to be to not know about dancers, and actors? At this point, Mitsuhide was starting to worry if the girl would have the sense to stay safe out in any world.

"Dancers are those who move to music, while the musicians create the music that the dancers move to and the singers sing to. As for actors, they act out stories for an audience to watch."