Boku no Aderia is a Manga/Manhwa/Manhua in english language, SUGGESTIVE 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

Yoel is an orphaned werewolf boy whose village was destroyed by vampires. Escaping into the forest, he collapses and is saved by a beautiful but clumsy vampire who's afraid of strangers. The two start living together, but she's so clumsy that it's hard to tell who is taking care of who. The story of two awkward and lonely people