Youkai Daisensou: Guardians
The Great Yokai War: Guardians·妖怪大戦争 ガーディアンズ
An earthquake in Japan disturbs ancient fossils, causing evil yokai spirits to appear as massive monsters heading toward Tokyo. Watanabe, an elementary school student, discovers he is the unsuspecting heir to a lineage of legendary monster hunters. He must use this inherited power to stop the yokai from destroying the city.