Keiichi Morisato is a shy student who serves as an errand boy for his roommates. One day he tries to order some food, but accidentally dials the goddess help line instead! A goddess named Belldandy arrives and tells him she will grant him any wish, but only one wish. He doesn't take her seriously, thinking his roommates are playing some kind of prank on him, and decides to play along and call their bluff. Being unpopular with the girls, he wishes to have someone like Belldandy stay with him... forever! Much to his surprise, Keiichi's wish is granted and Belldandy herself will stay with him forever; and that's where the trouble begins. Women aren't allowed in the dorm, and the magical force that granted the wish won't allow them to be separated. As if things couldn't get worse, Belldandy's sisters begin to show up as well!
Nineteen-year-old ronin Hideki Motosuwa desires two things more than anything else: a girlfriend, and an expensive humanoid computer (known as a 'persocom'). But with his dead-end job and no financial aid from his parents, owning a persocom seems impossible... until he finds a blond-haired female persocom tied up amongst a pile of trash! After getting her home and figuring out how to activate her, even the computer-illiterate Hideki realizes there is something unusual when it appears she can only say one word - Chii. Is she just broken, or is there more to this persocom than her behavior lets on?
Two stories, similar yet vastly different in the end. A lonly, down on his luck student, meets a pretty girl, and they work to be together. Each is diffrent but both give accidental romance a new light.