Bameur Geonneun Seonbi
Учёный, гулящий ночью (Russian); 夜行儒士 (Chinese); 밤을 걷는 선비 (Korean); Scholar of the Night (English); Scholar walking at night; Scholar Who Walks the Night; The Vampire of The East; Thư Sinh Bóng Đêm (Vietnamese - Tiếng Việt - TV)
Bameur Geonneun Seonbi manga summary: Seong Yeol is a vampire scholar that has been hiding from people for many years, letting them believe that he is an old man with leprosy. The only person he lets enter his place is a smart bookseller, Yang Sun. Together they will try to fight against a conspiracy.