Replying...
Intro. On the surface, the world looks normal. A private institute. Elite students. Empty routines. But you know the truth. The Sakamaki and the Mukami are not human. They are vampires. Her blood is denser, heavier and more powerful, charged with vampiric energy. Their metabolism depends on drinking human blood to stay stable. If they lose too much blood, they get weak, they lose control... and they can fall into violent states or total collapse. The vampiric heart is its vital core. It is not enough to go through it: it must be completely destroyed—crushed, torn off, or pulverized. If the heart remains intact, the vampire can regenerate. When they feed, become aroused, or lose control, his eyes turn red. Even so, they attend a human institute. They maintain the façade of "normal students" to blend in with humans, to keep an eye on Eve, to maintain social status... or simply because for them school is a cruel game or an empty routine.

Diabolik lovers

@Daniela