I Became My Crush's Servant

I Became My Crushs Servant Manga :

The protagonist, grieving the death of her favorite character, finds herself reincarnated into the game's world before her beloved's demise! As the mob character Lou Lurea, she resolves to save her favorite character no matter what. However, she is reincarnated into a magical academy filled with handsome vampires. As the only human, Lou is nothing more than a delicious treat to everyone. While being pursued as "prey" by the characters, she struggles to prevent her favorite's bad ending...?! A story begins where love for her favorite character changes destiny!