Merc Storia: Mukiryoku no Shounen to Bin no Naka no Shoujo
メルクストーリア -無気力少年と瓶の中の少女-
The story takes us on the adventures of Yuu, a teenager who has the power to "heal" which is an ability to transform evil monsters into sweet and adorable pets. One day, he meets Merc, an aquatic spirit who has lost his memories. Together, they embark on a fantastic journey to try to find them.
