Moymoy Lulumboy: Ang Batang Aswang (Book 1)

At a cosplay event in the Greenbelt, a little man in an elf costume gave the saleslady the bag with cash and a baby in it.

The baby was called Moymoy. Like other children, he grew up happily, playing and avoiding fights. But then Moymoy discovered that when he felt strong emotions he could change the form...