Inuyasha Season 3 Episode 18 Shiori's Family and Inuyasha's Feelings

Myoga comes to deliver a message from Totosai. He says that the Tetsusaiga will become stronger if it cuts a Hyakki Bat, a demon that can create a powerful barrier. Inuyasha and the gang search for the Hyakki Bats' nest, which is near the sea.