Dad Is a Hero, Mom Is a Spirit, I'm a Reincarnator.

Ellen, an 8-year-old girl and half-spirit, once lived as a scientist in modern-day Japan. Now she's been reincarnated into a new family: Rovel, her father and the kingdom's legendary hero, and Origin, her mother and the queen of spirits. On top of that, Ellen herself has the power to manipulate chemical elements! But are Ellen's powers enough to protect their family's happiness?