in Japan,live not only humans,gods too,Ayakashi lurk in every corner and kill humans, there're also shinki, the weapons gods use to kill Ayakashi,in the case of a 15 year old girl,Iki Hiyori,after an incident of saving a god named Yato she became human half Ayakashi, her soul often falls out of her Yuki is Yato's shinki who turns into sword when Yato calls him by his weapon name Sekki,Yato is a god that has no shrine, he does all for 5 yen, he promised to help Hiyori, and you?