Are the Mukamis from Romania?
Since I saw this question again, I wanted to make another post about it...
In Shu's Haunted Dark Bridal Vampire Ending, he ran away with Yui. He explained to her that they were going to "the end of the world". In further conversation, Shu mentioned the name of the place. The destination was without a doubt "Transylvania". A region that was once known as "the Holy Land of Vampires".
Then there was a flashback in Shu's More Blood Prologue in which he met Edgar/Yuma for the first time. Edgar/Yuma said to Shu that he should stay away from the forest because vampires live there.
The conclusion is that Shu ended up in Transylvania, the Holy Land of Vampires, as he ran away from the Demon World.
Not only Diabolik Lovers uses Transylvania. In literature and history, Transylvania is often mentioned as the paradise for vampires.
Now to Ruki's Lost Eden route. In Maniac 10, he went with Yui to his hometown in Eastern Europe to find out more about "the devil Trismégiste". No country or city names in this scene yet. But in Ruki's Maniac Epilogue, a scene started in a library where the name of the country was finally revealed. So the library of Ruki's hometown was located in Romania.
Based on the place where Shu and Edgar/Yuma met for the first time, the fact that Transylvania was mentioned and the library in Ruki's hometown, it can be assumed that the Mukamis were born in Transylvania.
Since we don't know when the Mukamis were born, we can't say for sure whether they are really Romanian. But nowadays Transylvania belongs to Romania.
Translation of text: "Place Romanian library"
