Miko kami-sama -The motion anime-

 On the day when summer vacation was just around the corner,
Koyori was called to the main hall by his mother. Koyori is told to receive a
request to exterminate youkai from a village as part of his training. After
being robbed of all the many summer vacation events I spend with my friends, I
headed to the village where I reluctantly requested. "It's full of green-it
seems to be a very peaceful and nice place" Believe in a word from such a
mother ... In an era of advanced science and theory, law and order, gods and
youkai were treated as myths and folklore, or as fairy tales and occults.
However, bad youkai who are dying behind the scenes are spreading in the
world, threatening the lives of people every day. The person who exterminates
such bad youkai was called a "devil master".