Office worker Leila seems to have been reincarnated into a fantasy world called "Dragon Kingdom". Thanks to the help of a giant dragon who saved her, she has been renamed Lilac and has been allowed to stay in the kitchens of the castle where the king of the land, the Dragon King, lives... but it's a hard working world, even for a black company! Lilac, who has been promoted to the kitchen staff with her knowledge of modern Japanese home cooking, decides to reform the working style of the kitchen by introducing a break system! But then, the miso soup she was bribed with ends up in the wrong hands of the notoriously ruthless Ryuuou-sama...? Lilac is prepared to be banished, but to her surprise, the Dragon King asks her to make him miso soup every day--? A former ordinary office worker becomes the cool Dragon King's favorite with her heartwarming cooking !