Ayashiyaあやしや ; คดีลับอสูรปริศนา ; Ayashiya The Demon Slayer

Kazuya is a boy with special gift, an ability that could change the fate of the world, is highly sought after by the Youkai's. When he was 12, his parents got slaughtered by a youkai that call himself Yasashiware. So, he swear that he's going to avenge his parents by putting 1000 youkai's heads on stakes. This is the adventure of Kazuya, the wind runner, as he tread through the land of japan to fulfill his vengeance!