The "Other" Tokyo.

Sachiko Tanaki never believed in ghosts-until the day her best friend disappeared.
A mysterious note. A haunted cherry tree. And her own cat suddenly speaking in a voice she's never heard before.
Drawn into a hidden Tokyo where magic seeps through streetlights and shadows hide ancient secrets, Sachiko must follow Wasabi, her sharp-tongued feline companion, to places where the living rarely walk.
To save her friend, she will have to outwit restless spirits, uncover the truth behind the Guardian Spirit, A cult of monstrous cats, and face the darkness that's been stalking her since before she even knew it existed.
Because some doors, once opened, can never be closed.