I Was Accidentally Turned Into A Vampire IWATIAV

Centuries ago, Gods and Goddesses fled the mortal realm known as Terra (Earth), evicting Angels and Demons from the Heavens and Hells, forcing them to co-exist with humanity. Despite the past struggles, with the emergence of the modern era that has now shuffled in the 21st century, peace and harmony has been reached between humans and non-humans.

That is the general consensus,

but in actuality one man struggles to find his place in the clear divide that is still ever-present, paranormal cases being thrown at him to be solved because - you guessed it - he was accidentally turned into a vampire.