"I don't like a woman like that. In fact, I hate her. I absolutely loathe her." —Suria's first love was shattered into a million pieces when she accidentally overheard these words from Raith, her beloved childhood friend. Years later, after that bitter memory—when, in tears, she punched Raith in the stomach with all her might, impulsively declared, "I hate you too!" and fled—Suria has grown into a valuable 'Spirit User' and been entrusted with a crucial mission by the kingdom. Yet, the one who arrives as her bodyguard is none other than Raith, now known as the 'Demon Knight,' infamous for his cold and ruthless nature.

Forced to work alongside him, Suria finds her old emotional wounds relentlessly reopened. However, Raith appears to harbor a secret...

Until these two finally find their happiness.

★Main story completed. Bonus chapters updated irregularly.

★Book now available from KADOKAWA B's-LOG Bunko.

★Comic adaptation currently serialized in B's-LOG COMIC.