Okay, So I have watched Diabolik lovers and to be fairly honest; I hated it. However, the manga is so much more gratifying. Yui talks more and although she is a bit of a masochist she is more vocal and you don't see her to be as annoying. Not only that but we are provided with further character development on each of the brothers. I personally like kanato. I hate how he is portrayed in the anime. Yes he is abusive and violent but it is due to truama inflicted on him and the manga gives us more of an insight. You are also able to pick and choose so you can just read the section on your favourite pairing.