Chichi wa Eiyuu, Haha wa Seirei, Musume no Watashi wa Tenseisha.

Ellen is an eight-year-old girl born of both a human and a spirit. She was born with special powers of controlling elements, not the usual four, but the real ones from the periodic table. With her past life memoirs of being a scientist, she uses her knowledge to master her powers.

Rovel Vankreift was a hero who died in battle, but Spirit Lady Origin, Queen of Spirits, saved him and brought him to her world. Later, they married and had a daughter, Ellen, with incredible powers. 

As they say, peace is never permanent. Ellen’s parents have to face various troubles, and for that, they want to keep their gifted child away from the world’s eyes.