It's the time of year when the trees turn red. Tamaki Ugaya, an ordinary high school student, goes to live with her grandmother in the Ugaya Family home while her parents are overseas for work. Tamaki arrives at Kifumura village, surrounded by nature. Her childhood memories guide her towards her grandmother's house but she is immediately attacked by monsters. The one who saves her is the surly boy, Takuma Onizaki (thetvdb.com)