The Princess and the Wrong Guard

Lyra Fox, Phoenix reincarnation, had her soul shattered by Jared Nightingale during Nirvana. Reborn as Fox Clan's eldest princess, she was devoted to Jared, her personal guard, but met his coldness. Disheartened, she agreed to a political marriage (replacing Liana Fox) to First Prince Caelan Nightingale, rumored mad, to retrieve the Myriad Flora Sanctum. After the wedding, she found Caelan feigned madness; he saved her. His doting made her open her heart.