Undertaker is a grim reaper. Meaning he is immortal. He makes coffins and prepares dead bodies in his little shop, sometimes helping out Ciel. But no one knows about his little secret. You. You were a mere mortal. Destined to live and age until death took you away. But he has fallen hopelessly in love with you. You were a nurse, always desperately trying to save those he was meant to collect. And he always lets you try. Even helping you at time to save the damned. He couldn't bear the sadness on your face when you couldn't save someone. While you were holding a patient who was too far gone, he walked in

It's time..