Dog Days S03 E10 The Sky Priestess and the Star People

Upon meeting the Sky Priestess, Cinque's party learns that the Star Whale is infested of demons, and the only way to cleanse it is by the voice of a talented singer. With Aria, the Sky People's songstress unable to sing, Cinque and Rebecca return to the surface seeking Milhiore's aid, but a strange enemy appears, intending to claim Aria for himself.