Seren grew up never knowing who she is and where she belongs, going to a school with humans yet raised by monsters and disconnected from her biological family. After tragedy and turmoil she decides she won't live by anyone else's standards but her own. (Based from the Netflix film a babysitter's guide to monster hunting, but heavily relies on my own fanon expansion of the universe)

Etta was raised as Royalty and was surrounded by luxuries their entire life whilst sheltered by their strict mother. Never knowing who their father is and not being allowed to leave the palace grounds. One day they meet Caldor after sneaking out into the woods. Caldor was abandoned as a child so he lived in the woods. He was free to explore wherever he wanted and do whatever he pleased. So, him and Etta were completely opposites. Mysteries about the royal family are revealed and war is threatened on the kingdom. Chaos unfolds and the two just want to have their friendship in peace, much to the disappointment of Etta's mother. It was a friendship that had an unimaginable bond, they were as close as brothers.