I Awakened As The Last Silver Goddess

Erin runs a business in mana stones, and the methods she uses come from science she learned in another world. She was a girl in the modern day who was reborn inside a magic comic as Erin, a side character who is doomed in the original story. Through the stone trade she picks up companions who are not human. It also turns up things the Silver Wing bloodline has kept buried for a long time, and a secret about the God of Life. The Holy Tribunal has schemes of its own, and beasts of great age and size begin to surface one after another. Erin and the other young leads set out together for the Lost Continent. There they look for the reason the world is heading for collapse and take on the task of stopping it.