Episode 78

Only You Sango (珊瑚目指してオンリーユー」) is 78th episode of Inuyasha

Plot
Sango is called for by a young lord with a demon problem. It turns out that the young lord in question has fallen in love with six years back, and asks her to marry him. Sango tries to refuse him delicately while Miroku tries to look as if he doesn't care whether she marry or not. In the end, Miroku and Sango kill the demon together, and they pursue their journey.