As we all know, college student Rin Ito just wanted a normal and peaceful life away from his incubus heritage, but things don't always go as planned.
he discovered he wasn't actually an incubus, but instead a Darkness.
to be specific, the tenth Darkness.
after a suicidal fight against monsters, Ten survived but he needed to evolve and enter a higher stage, stage 1, but he was deaths door unable to wake up.
so both the first and second darkness opened a portle to the void, their home and the place they were all born from.
being cast back into the last place he ever wanted to be, he started his evolution and fell into a deep slumver as he floated into the void, absorbing Darkness for nourishment.
but that time worked differently inside of the void, after all it was a place before time existed and a place were time still didn't exist
it's only been a month out here but inside there, Ten had been asleep for 250 years.
this story starts off with Rin finally waking up and finally free from the void. a something might of changed within his being.