Merc Storia: Mukiryoku no Shounen to Bin no Naka no (Sub)
Watch Merc Storia: Mukiryoku no Shounen to Bin no Naka no full episodes online English Subbed kissanime.
Other name: Merc Storia: The Apathetic Boy and the Girl in a Bottle
Synopsis: Merc Storia takes places in a world where humans and monsters coexist. The protagonist, Yuu, is a healer apprentice and possesses the ability to tame monsters. In a quest to regain the memories of Merc, a girl confined in a bottle, the pair embarks on a journey.
Sources: Myanimelist