Jinrui Saikyou no Hatsukoi

The opening volume of the Saikyou Series. Aikawa Jun, the Lonely Red—this is the story of her present. Thus begins the "Strongest" saga. "Ugh, this is so dull. Maybe I should just die." Aikawa Jun, humanity's mightiest Contractor, has grown so overwhelmingly powerful that the entire world has finally surrendered to her. With no foes left to vanquish and no assignments to complete, her existence has lost its purpose. Yet just then, love visits her for the very first time. A transcendent romance that defies the limits of being human—the strongest love story the world has ever known.