"When the keys of the moon are reunited, the stars will return to their positions; when the guardian forgets his true name, eternal day will fall."
In the first year of the Star Ring Calendar, the expansion of Meng Academy was completed. However, the "Aster Ring" symbolizing a new era in the magical world reversed and cracked on the eve of the opening ceremony, and the seven ancient keys of the waning moon were awakened one after another. The shadow of Tong En, the current Moon Star, was the first to be erased. His identity, memory, and existence itself were like pencil lines erased by an eraser - this was just the beginning.
Eric, the prince of the universe, discovered that three hearts were beating in his body at the same time: the universe, the stars, and the phantom. Every time the heart beats wrongly, the crack will tear open an inch. Uknana, who returned from the north, brought the first key, but she also brought the "identity stripping" prophecy that the Presbyterian Council kept secret. When the key gap perfectly matches the badge crack, the boundary between Moe Academy and the Dark Universe is folded into a piece of paper, and the students must decide: become a door or a gatekeeper.
This is an adventure about "forgotten".
Some people lose their shadows, some lose their names, some lose themselves.
When the stars fall, the eternal day is coming——
And after dawn, does anyone still remember the dark night?
