Lin Wei, a modern high school student, accidentally traveled to the world of "Guarding Sweetheart" and transformed into Hoshino Wei, a transfer student from Shengye Elementary School, carrying a light blue star-patterned guardian egg that can sense emotions. She is familiar with the plot but triggers the butterfly effect. She purifies the bad guys side by side with Yameng, faces the crisis of the Resurrection Society, and finally decides whether to stay in this world full of warmth and courage while protecting her bonds and growing herself.
