You're chased by a pack of wolves in the woods, and finally you found a good hiding place; an old looking castle.

Everything is safe now, you think. Until suddenly two figures from the darkness grabbed your shoulders from behind.

"Weird, a prey entering its own predators' cage?" Sae spoke first, his tone sounded sadistic despite his expressionless face.

"What a fool." Rin scoffed nonchalantly.

The vampire brothers stared at you hungrily, but they're not being aggressive, not yet..