This was a pleasant find. I wasn't aware of this series until I stumbled on it. The only thing I found wrong with the series was basic lack of research by the person who wrote th script. The story was fantastic, but the blood type that can only recieve the same blood type is O-. Gun shined in this role and Boat was the perfect matchup for him in this story. The other characters were well casted as well. Tenon and Sugus were great in their roles as well with a great side story and lots of chemistry. Like I said, I loved everything about it other than the lack of research.... golden blood is O-. It is the universal giver but not reciever. AB- can recieve all negative blood types.