Please Give Me Your Blood, I Will Serve You in Gratitude is a Manga/Manhwa/Manhua in english language, ROMANCE series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

A long-awaited new series by the author of "Demon Mother: My Son is so Cute, I Just Can't Help Myself!" A young man picks up a young vampire girl who has fallen ill, she then tries to give her all to repay her for his blood, but she's too clumsy to do so. A vampire rom-com that depicts a warm life among different species where no one is left behind or abandoned!