Autumn Army - Kami-kiri

" ...In the beginning of the Genroku Emperor’s time (1688-1704), people walking on the streets at midnight had their hair cut by a “thing”. These people didn’t notice that their hair had been cut until someone informed them. When they went back the same way, they found their hair on the ground...
...In the Edo period, a woman on her way to go back home had her hair cut but didn’t realize it. When she arrived home, her family informed her and she fainted. Kuro Kamikiri was responsible for this....
...Kami-kiri (“hair-cutters” ) are known for sneaking up on people and cutting all their hair off, particularly when they are unknowingly engaged to marry a youkai, spirit or other supernatural creature that is disguised as a human. These hair-cutting attacks are intended to delay or prevent weddings between humans and otherworldly beings, which are typically doomed to failure... " cited from Monstropedia - [link] .