In the vast interstellar space, the power of the source is constantly depleting. Light and flame are one of the two most important sources. However, after becoming human, they unfortunately encountered a catastrophe... After reincarnation, they will face greater challenges - the arrival of evil thoughts and signs of doomsday. Can the siblings Hikari and Homura regain their former glory?
Purpose: Unity is the foundation of success, and rare disputes may be the bridge of strong friendship.