Legend has it that vampires really do exist in this world, but they are just another kind of Rakshasa that has always been shown as a demon in people's minds. In fact, it may be a poisonous rose that is more beautiful than an immortal.
Accident or coincidence, love is like a poppy. It's easier to quit if you get it.
The love between a Rakshasa and a creature mixed with human and vampire blood is destined to end in mutual abuse. The deeper the love, the deeper the benefits, and the deeper the torture. It's just such a person. How can a person who has it in his heart easily ignore and stop loving?