Two months after coming to Tokyo, Iku is enjoying otaku life, but something mysterious is happening to him: he's started to see ghosts!

One particular ghost – who's always standing on top of the pedestrian bridge at night – catches his interest, but he studiously ignores it… Until one day the guy turns up at his apartment holding a doujin Iku had dropped. He says his name is Seo Mimori, and seeing as he's a lost soul with nowhere to go, Iku doesn't really resist when he "moves in."

But then a shocking secret about Mimori's death is revealed…