The MACABRE DIARIES

In the desolate halls of a decrepit mansion, a vampire sits alone in the dim glow of candlelight, surrounded by stacks of parchment and quills stained with crimson ink. His long hair cascades over his pale, emotionless face as he carefully crafts each letter with painstaking detail.
With a heavy heart and eyes filled with sorrow, the vampire writes love letters to the women he once loved and the ones he had mercilessly taken from this world. His words are filled with apologies and regret, as he relives the memories of their blood-soaked final moments over and over again in his mind.
As the night stretches on and the letters pile up, the vampire becomes consumed by his own guilt and self-loathing. He knows that he is a monster, a creature of darkness who thrives on the suffering of others. But despite his best efforts to suppress it, a small glimmer of humanity still flickers within his cold, dead heart.
The vampire continues to write his love letters of remorse, trapped in a cycle of despair and longing for a redemption that he feels may never come. He knows that he is doomed to walk alone in the shadows, haunted by the ghosts of his past and the echoes of his twisted love.
However, only one of these women holds his true feelings. She is the one who can grant him his salvation...

The book uses the 3D Guise literary genre, invented by the author when a protagonist ends up reading the same book he is part of.