Protecting My Little Sister Makes Me Invincible

Three years ago, the Wang family was wiped out. Wang Fan hid away with his younger sister in the Qingyun Sect, pretending to be a good-for-nothing. His sister carries an ancient bloodline, and if it is exposed, the Shadow Hongmeng Pavilion will come to kill her. After three years of enduring in silence, he finally snapped when his sister was injured and bled. The sword within him awakened. A voice told him: trade ten years of your life for three days of power. Three days. That's enough to collect, one by one, everything everyone owes his sister. Three years with his blade concealed, and when it leaves its sheath, an emperor is born.