The longer version is that the man who I once thought was my father, was trying to summon and control a demon. My girlfriend, who actually is his daughter, and I found out, and found him. He and I got into a heated conversation when I had a sword at his heart. He flipped on me and stabbed me to use my blood to summon this demon. My girlfriend helped the demon, who killed daddy dearest and in return, the demon granted her the wish to bring me back.
Now we are back again, and we've brought back her half brother. I'm still not sure about him, but he and I were working together at one time, so we will see how it goes. He's either going to come with us, or not. My guess is not.