Lunacia's Mushoku Tensei

Lunacia Greirat. The twin sister of Rudeus Greirat, the fifth strongest sorcerer in the world. However, except for a few, the world is unaware that her achievements far surpassed those of her brother. She is the Crimson Queen of the Boreas family, the Empress of the Demon Realm, and the destroyer of the Demon God Laplace, the destroyer of gods and men. Yet, to her family, she was her parents' favorite daughter, her sisters' most respected older sister, and her friends' most beloved companion. All she did was to spend beautiful and happy times with her family.