In order to atone for his sins and repay his kindness, the King of Soldiers volunteered to become the personal security guard of a wealthy daughter who was blind (severe visual impairment caused by albinism). On the surface, they are the lowest level of security, but in fact they are top-level biochemical warriors hidden by the country. In the complicated city, he has to face the unruly and willful daughter of a wealthy family while protecting her from the competition of the global underground forces (because her special gene is a "key" to a certain kind of unlocking). The core setting is "The King of Soldiers uses the dual skills of medicine and special operations to act as the patron saint of the 'blind man' in the city."
