A Sword Reaching the Heavens

A fire dragon coils within his dantian. Demon beasts? Savage beasts? Or something else? Whatever you are, I'll eat you all and refine you into vital energy! Your enemies are powerful? They have plenty of inner energy? I'll open my mouth, suck it all in, and turn it into my own power! You've got strength in numbers? You brought an army? I'll spit out a mouthful of spiritual fire and burn you all to ashes! Beautiful women join hearts, heroes join forces, peace is restored to the human realm, expeditions march into the demon realm, and fierce battles rage in the divine realm... From weak to strong, fighting all the way to the peak! Unify the Three Realms and reign supreme!