My Sweet Bodyguard: A Nightmare Dressed Like A Daydream

18 year old Ariana Hanasaki's life was saved by Sora, who was disguised as a girl. She then meets her cousin-in-law, Kaiji who she hasn't seen in years. Stuck between chossing the guy who saved her life or her non-blood relative, she chooses the guy who saves her life. She has her doubts at first since all he does is flirt with girls, but she learns that he's not all that bad.