Merc Storia

is a Japanese online free-to-play fantasy RPG created by Happy Elements. It was released in 2014 for Android and iOS devices. An anime television series adaptation by Encourage Films titled is scheduled to premiere from October 11, 2018 on AT-X and other channels.

Plot
Yuu is an apprentice healer who lives in a world where humans and monsters co-exist. As a healer, Yuu has the ability to turn hostile monsters into friendly pets, and together with Merc, a tiny girl magically trapped in a bottle, he embarks on a grand adventure to help Merc regain her memories.