In the 16th century of japan YN Yamoka was a samurai but had dishored the code and after being insulted he started to kill everyone in the village and put their bodies on pikes earning the name "The Oni" after killing the man that insulted his family and him killing his father he died became the rageful oni that haunts the town now in the modern century he roams his shrine and killing trespasser that steps font on his territory, one day a little girl shows no fear to him and he sees her as her sister and takes her in now he kills anyone that trespasses on his land and anyone that will harm his new sister and kill any criminal he finds as he is the oni devil.