Ichijou-San Wa Kao Ni Deyasui 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.cc fastest updating comic site. The Summary is

Mahiro seems to admire Ichijou-san from afar. She's the most popular student in the class and belongs to a very prestigious family. Despite all this, Ichijou-san treats everybody nicely and is equally kind to everyone. But she harbors a secret that Mahiro unexpectedly discovered— she's a vampire! She claims she's not interested in human blood, though there appear to be moments when she's barely able to conceal her innermost desires... A bloodsucking, heart-throbbing love-comedy about a young lady vampire!