身体は児童、中身はおっさんの成り上がり冒険記 サテラもついて行きます！

Synopsis

When Satella was young, her parents were killed by monsters. One day while hoping that her peaceful daily life would continue, she met Gray Millard, the third son of a noble family. She was touched by Gray's determination to carve out a future for himself using advanced magic and special skills, despite the harsh punishment his stepmother meted out to him. She decides to go on an adventure with Gray, who had his sights set on the world.