Seto no Hanayome Temporada 1 Episódio 13

Nagasumi is taken back to Lunars house where a wedding ceremony is going to soon begin. Moments before Nagasumi is meant to become her husband, Nagasumi voices his disapproval of a false wedding, and promptly refuses to continue with the wedding. Suddenly, Sun appears and voices her disagreement with the wedding as she uses her sword to defeat Lunars guards and announce her love for Nagasumi.