Reincarnated in a stone in a different world, I want to protect the girl, so I will be strong

The main character wakes up one day in another world, reincarnated as a stone. There, he meets a magician named Anna, the Queen of Femt Kingdom. He then joins her on her quest. Embark on a great journey with Anna, her maids, and many other NPCs. What awaits them on the path ahead? Only one way to find out!