Kyou kara Anata no Goei desu ~Outaishi Denka no Juunenme no Toai~Kyou kara Anata no Goei desu; 今日からあなたの護衛です; 今日からあなたの護衛です～王太子殿下の十年目の執愛～; Kyou kara Anata no Goei desu: Outaishi Denka no Juunenme no Shitsuai; I'm Your Bodyguard From Now on; Starting Today, I Am Your Bodyguard: The Crown Prince's Decade-Long Devotion; I Became His Bodyguard, but He's Been in Love with Me for Ten Years?!

Celeste, assigned by the organization, becomes the bodyguard of Prince Edward, the heir to the Midland Kingdom. As they spend time together, she witnesses Edward's strength and vulnerability, and gradually decides to protect him of her own will. Edward, in turn, trains his body and mind, determined to be strong enough to protect Celeste. 'I love only you.' As they overcome numerous challenges, the two grow closer. However, the barrier of their difference in statushe, the prince, and she, just a bodyguardbecomes an obstacle they must face...