Fifteen years ago, indiscriminate supernatural attacks rocked Japan-prompting the government to create the Tactical Raveling Unit in the First Counter-Psychotrauma Division of the Special Measures Agency...or TR1M, for short. Their purpose? To deal with the monstrous manifestations called the Unraveled. And they're good, too... so when TR1M agent, Raveler Second Class Nika Agou, is shipped to a far-off backwater, she knows her poor performance is to blame...but what she doesn't expect is to find a hotbed of Unraveled activity, and a boy with a secret who just might be her way back into TR1M's good graces!

(Source: Kodansha USA)