Hello World

Trama

On Christmas Eve, Tomoki Ikeno discovers a silver-haired girl named Reina collapsed near his home. She is ignorant of the world but possesses exceptional computer skills, and soon begins living with him. After a few days, a woman claiming to be Reina's older sister arrives, intending to take her back. It is revealed that Reina is a genius programmer for the military company Aegis, responsible for the nation's defense armaments. To evade Aegis's pursuers, Tomoki and Reina are forced to flee.