Mutsumi Tamura

One fateful summer, a group of elementary school kids set adrift on an abandoned apartment building must look within themselves to find a way back home.

Yuu, a young healer with the power to heal the hearts of monsters, receives a mysterious bottle from his father as a gift. When Yuu touches the bottle, Merc, a girl made of liquid, appears from it. Merc has no memories from before she met Yuu and wants to learn more about who she is, so the two of them set out on a journey through various countries. And thus begins the comical fantasy of Yuu...