One

The world of gods and demons is real, and the myths about that world and the human world intertwining have come to life. This story follows Isaac Porter, the child of a human and a demon, in his hunt to find acceptance in the average world.
To make things easier for him, regular humans do often find it hard to see his true form. However, occasionally a human will break this expectation and see what he really looks like.
To make matters difficult, another half-demon just like him ends up falling for him when he doesn't like her back. And, in addition, he falls for a human boy who doesn't know about him and his abilities.