For centuries, celebrated as a genius knight of the Caleta Empire, Lustica Zenas,' who battled the Barrier' and unending wars, saw all her strength vanish overnight, as if it were a lie.After four years of seclusion, a mysterious man named Hayden' appears before her, with whom she spent a sweet night, yet his true identity remains unknown. Hayden seems to remember the past Lustica.Meanwhile, the Emperor of Caleta summons her, now living like a pauper, and dispatches her as a diplomat to the longstanding enemy, the Perseta Empire, beyond the crumbling barrier.Will the former knight Lustica, who has lost all her strength, be able to reclaim her past self?