Blood is full of temperature and strength. Blood flows through all parts of the body and supports life. In the Warring States Period, a king initiated a "blood sacrifice" in order to win the war. As a result, people gained greater power and conquered the king's country. However, the king's ambitions continued, and in the end the kingdom fell apart, and the powerful blood was scattered around the world. Until now, this power has not dissipated, and our protagonist and blood have created bright sparks...
Concept: Even a fool can be a hero