I would have to say that my favorite part is episode 1. It is when he looked into the glass and the glass had eyes. It was staring at him then he got transformed into another world. She started slashing him and blood was everywhere. It then looked like he had a hole in his chest. He gets turned into a demon. It was very Hellraiser type of feeling. I am definitely buying this show. Movies like this is a reason why I watch anime.
I like the fact that Eiri is the reincarnated Marchello and must atone for the sins of his past life. This is a very interesting anime and I really like the story. I can't wait to see what happens next!