Servamp: Red Riding Hood.
"I'll hold on for your happiness...even if that happiness is the same thing that's killing me."
He died of the disease called the 'Hanahaki' disease, which the victim coughs up flower petals when they suffer from a one-sided love,and they cough up petals until they die.
And who did Mahiru love?
Kuro always said that love between a Human and an immortal Vampire will never happen,and the vampire could never reciprocate the human's feelings,so Mahiru didn't tell him.
He refused surgical removal,which made him suffer, but he didn't tell anyone,and so,it resulted into his demise.
Kuro grieved,regretting telling him that,and he regretted his actions of going against his own feelings that he actually loved Mahiru.
And that was when the Gods took notice of their situations.
They became interested,and told Mahiru's soul that he had a chance to become 'Alive' again.
To be alive,in the form of a dream.
This 'gift',or 'curse',would draw people to his dream, where he would take the form of the Wolf in the story of Red Riding Hood,and the people drawn would become the 'Red Riding Hood'.
He had a chance that if people reciprocated feelings of love for him,he would be broken out of that curse, and he could come back alive again.
However,he was sad that he couldn't love Kuro once he loved that person who came into,or got drawn into that dream,but it was still a chance to be alive once again.
But it didn't matter,as the Gods removed his memories of his past before he died when he was 'revived' in the form of the wolf in the Red Riding Hood.
It doesn't seem all bad,with him following the original story if he didn't go well with that person..
..Until a taller and muscular Azure-Haired male that seemed older than him with Crimson Eyes,popped up.
"WHY IS RED RIDING HOOD TALLER AND MORE MUSCULAR THAN THE WOLF THIS TIME?!"