Ikemen Vampire: Temptation in the Dark

The game takes place in late 19th century France where you, the player, have been transported to from the 21st century. You're stuck in a mansion full of some of the greatest historical figures of all time for a month until you can go back to your own era, but there's a catch - every single one of them is a vampire. There's only one rule for you during your stay, don't fall in love.