Hikari to Mizu no Daphne EP22 - Everyday Life of an Eye and Recollection

A band of slave traders captures Maia. The same traders Nereids raid ruined. Millie and Tony Long, a guy that has appeared watching Maia from the shadows many time in previous episodes, save her. As Maia recovers she dreams of her past in the city of Elpida. Tony confirms Maia is the soul survivor of the city. The information branch of the Ocean Agency then kidnaps Maia to insure she can say nothing about past events.