Murder Princess - 1x03 - Season 1, Episode 3- Followmy.tv

Falis and Alita get into an argument, and Falis goes off to vent her steam on the encroaching goblins. During this time, Akamashi's aides kidnap Alita and interrogate her about her real identity and about the "key". Falis goes to the rescue but is coerced into dropping her weapon. A swordsman then leaps onto the scene and saves the day; he turns out to be none other than Prince Kaito, Alita's brother.