I Turned into a Vampire Princess, but I Never Meant to Do It with My Bro

After being hit by a truck and left bleeding profusely, Luo Xingyao thought he was as good as dead.

But then a "Vampire Princess Training System" suddenly appeared in his mind, and his body underwent a strange transformation.

Wait, a vampire princess? Luo Xingyao isn't just a boy, he's an ordinary person!

What's with having to drink blood as soon as he wakes up? He'll die if he doesn't drink any within a minute? Is being a vampire really this inconvenient?!

And worst of all, the only person he can drink blood from right now is his best buddy?!