"I will protect you with my life.'' Arisa, who works at the K University Medical Research Institute, is attacked by suspicious men on her way home. In her desperate situation, an overwhelmingly strong man named Masatora Kagei rushed to her rescue. Masatora suddenly begins living together with a talented bodyguard sent by the government to protect Arisa! From now on, you will be with a handsome man who will fight you from the time you take a bath to the time you go to bed...Does the job of an escort include naughty things? I will direct my passion directly to a man with a hard-boiled and earnest face (*and he is the strongest human being) If I were to do that, my body and mind would tremble...! Hard-boiled ☆ Dramatic love between the strongest man in the human race and the targeted science girl!