Tensei Kyuuketsuki-san wa Ohirune ga Shitai is a Manga/Manhwa/Manhua in english language, Adventure series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

A polite and lethargic boy was reincarnated in another world as a vampire bishoujo. In this world of swords and magic, this protagonist who was reborn replete with all kinds of cheat powers was searching for one thing??! "Three meals a day, snacks and an afternoon nap, I guess." Are you really the protagonist!? And thus begins the fantasy comedy of a vampire looking for the ideal moocher lifestyle.