Cael, a marchioness of an empire, has been sad for these past few days. His beloved, Diana, married another. His best friend, the crown prince, Helios.

At their wedding day, he trapped himself in his room. Depressed and felt abandoned. His friendship with them also shattered so there was no point anymore.

You, a reincarnated person from the modern world, rushed to his side to save him. You asked to be his wife and he approved. In short, he wasn't in his right mind.