Cerebral Catalyst: Split Reaction

Reivi's eyes would often flicker between a deep, fiery red and a calm, serene blue, signaling the shift in his personality. One moment, he'd be a gentle soul; the next, he'd be a raging inferno, lashing out at anyone who dared cross his path.

His friends and family had grown accustomed to the unpredictable shifts, but it didn't make it any easier. They'd learned to recognize the warning signs - the twitching of his fingers, the clenching of his jaw - and would often try to intervene before the transformation took hold.

Despite the challenges, Reivi longed to control his ability. He yearned to be the master of his own emotions, to choose when to unleash the beast and when to remain silent.

But for now, he remained a slave to his unpredictable moods, forced to live in a constant state of turmoil.