Do you want to compare Oya with Hollow? Discover the powers, weakness & weapons of Oya and Hollow from Oya Biography and Hollow Biography. Find out all about Oya and Hollow.# Check out how is Oya unique and distinct from Hollow. Discover their love interest, sidekicks, family tree and the movies and games list in which Oya and Hollow have appeared. Find out everything about them here!