A kinda ditsy and sheltered prince gets back his memories from his past life that warn him that a demon lord is coming to destroy the world in a year and he has to find the hero and train so they can defeat him. But after finding the hero, the hero says he doesn't have time to level grind because he has too much housework. So the prince moves in and essentially becomes his maid and cook. Naturally there's some sexual tension
Yuusha yo Boku ni Kashiduite Kobirugaii