Book 2: The Mysteries of Winter

Book 2 is set before "The Child of Starlight"

2: The Mysteries of Winter (Endor x Airis)
3: The Love Story of Fire and Rain (Inferno x Atlanta)
4: Love in the Caribbean (Solaris x Lunaria)

These three books give an in-depth look into the lives of the Elemental Guardians

But we're starting with Endor and Airis first

So how did Endor and Airis come to meet? Why does Phil the yeti hate Endor so much? How did they manage raising Nineteen sons!!!

Well that's a story worth reading.