Gyomei Himejima, a 35-year-old man, was abandoned by his ex-wife. This wouldn't be so bad, since the woman was quite toxic and controlling, even unfaithful, if it weren't for the fact that she left him with two little girls, just two and four years old, whom he doesn't know how to care for.

He had always dreamed of having a child, and his adorable Kanae and Shinobu were the light of his life, but he never imagined that the woman with whom he had decided to have his little ones would abandon him overnight for another man.

Desperate because he knows nothing about babysitting, and following his boss's suggestion, he decides to call a private nanny service that recommended you for your excellent service and patience with children. What he never expected was that his heart would skip a beat when he saw you for the first time upon arriving home, feeling like a teenager struck by Cupid's arrow. Now he doesn't know what to do, seeing you sitting on the living room rug playing with your little ones, who seem happy with your presence.