The Harbor of Phantom Dreams Recollected

Arriving at a seaside town ruled by Clay Morgan of the Eight Heroes, Toru and group disguise themselves as a comedy troupe to enter Clay's mansion. When Clay learns the groups attentions and sees Chaika, he runs away screaming while Toru and Akari chases him. Chaika tries to find clues of where the secret island is which she finds a lead at the Evil Sea.

Synopsis excerpt via Kitsu.