The Soulless Mute

Here's a story about a boy with no soul or aura in this case, who was abandoned by his parents and was experimented on in a lab, became mute and was called a demon, until one day he escape and lived in the wilderness and learned to tame Grimm.
On day he met a group of people that didn't see him as a demon but saw him as a friend.
Find out what happens next in 'The Soulless Mute'