Everything happened because of a coffin that emerged from the river… I thought it was an unexpected fortune for me, but alas, it was an untimely disaster. After prying this coffin open, I instantly felt that something unpleasant had followed me back to my home. As my daughter started acting increasingly weirder, she—as a three-year-old—started hitting puberty! (Source: Bilibili Comics)

Ya se and his little brother, Ou Ne, are studying in a combat academy. However, the people around them treat them bad due to that they were poor and lowly. The combat tournament is where brave warriors fight for fame and fortune. They will also fight for the beast essence of their opponents if they defeat them. Ya Se joins the tournament as a masked warrior.