Demon Outside My Window (слэш)

Toshiro, a child shunned by society, alone and struggling to find anything worth living for, until one night he finds a demon outside his window. Ichigo, an ancient demon, lost in the dullness of eternity until he is drawn to an unusually strong soul soaked in despair. A world of magic where humans have lost the war against the darkness, huddling in fear of the night.
OP Ichigo, eventual OP Toshiro, eventual OP Grimmjow
Massive cast, dark themes
Multiple pairings, eventual ensemble cast - GrimmIchi, IchiHitsu, GrimmIchiHitsu, other pairings tbd
Dark themes - violent deaths, moral ambiguity, bloodplay, horror
But also - dragon Hyorinmaru, fluff, love, evolving Ichigo as in he starts out ooc but becomes more 'Ichigo' as we go