The story is about kagome. Something happened and she's in a bunker for a long time, she's all alone. But then the bunker says it's OK to go outside and Tokyo is over over ran by the jungle. People have survived but they are mutants and inuyasha somehow gets in the bunker.
I read it on deviant art like a few years ago but I can't now stand the format so I'm just wondering if the original author Ever put it on here.