My Boyfriend is a Vampire (2010)

Yoo Da-In ist ein Junge, der wegen seiner Schönheit oft als Mädchen verwechselt wird. Durch das Schicksal trifft er auf Seo Kang-Hoo, der so gut aussieht, dass sich sogar Jungs in ihn verlieben. Yoo Da-In wird in einer Nacht von Seo gebissen, was dazu führt, dass sein Herz aufhört zu schlagen …

Quelle: www.anisearch.de/manga/7772

Blurb:
Being beautiful is never easy, especially if you’re an eighteen year old boy like Ryu who is constantly mistaken for a girl because of his delicate good looks. Ryu is, in fact, anything but delicate. He is the ringleader of a group of tough kids in an all boy’s school, and he’s quick to beat the living daylights out of anyone who even hints that he resembles a girl.

If that wasn’t hard enough for a regular teenage guy to cope with, his life is about to take a shocking turn for the worse. When Ryu stumbles upon strange happenings in the forest, he gets sucked into a world of vampire intrigue and sinister romance that he never knew existed. And he learns that there are worse things than being turned into a vampire: being turned into a girl?!

Source: www.anisearch.com/manga/7772