Hamelin no Violin Hiki: The Movie  

As they journeyed towards stopping the Demon King, Hamel the violinist, Raiel the pianist, Flute the magess, and Sizer the female warrior paused in a small kingdom to confront a rampaging monster. Upon their arrival, the king and queen warmly welcomed them as heroes. The royal couple then disclosed that their daughter had been abducted by a beast residing in a nearby castle. They requested the group's assistance in rescuing the princess and vanquishing the fiendish creature. However, they were informed that the enemy's stronghold was heavily fortified with guards.