Koihime†Musou EP1 - Guan yu, Zhang Fei - A Sisterly Pact is Made

Kan'u, a traveling warrior who fights bandits, visit a town where she encounters RinRin and her troublemaker friends. While most of the town find their antics funny, the Mayor isn't when he decides to send his soldiers to catch her until Kan'u volunteers to do it herself. After meeting and fighting her that ended in Rinrin's defeat, Kan'u realize that her antics are just her way of getting attention after being lonely after her grandfather died. After making a vow of sisterhood with Chōhi (RinRin other name), Rinrin apologizes to the mayor and leaves her hometown with Kan'u but not before saying goodbye to her friends.