A plain girl with a talent for cooking is reborn as a princess!? Aria, the princess of the Kingdom of Estrella, is born with memories of her past life. She spends her days peacefully doing what she loves most—cooking. But suddenly, she is chosen as a candidate for empress and is sent to the cruel and ruthless Emperor of the Zelo Empire…! Deciding to conceal her identity, Aria begins living in the city for a while, where by chance she ends up working as a chef at the “Happy Diner.” Her Japanese dishes quickly win over people’s hearts (and stomachs), and before long, the diner becomes a hugely popular place with lines out the door. Then, one day, a mysterious and handsome young man named Rinto visits the restaurant after hearing about its reputation…