His Devious Harbinger: How To Tame A Wicked God?

Summary:

A modern woman is transmigrated to a young girl’s body in the world of magic. Due to the circumstances going out of her control, she releases the dark god who is only 11 years old boy with no memory?

To keep herself alive, she has decided to make him love her as his older sister. With a spirit beast who likes to eat his problems and a seer who seeks her spirit beast, she traverses through realms while the dark god wonders how to get his heart back.