Chronicles of the Lost Stardust

Long ago, in the universe of Echsilon, which existed parallel to ours, lived a civilization of highly intelligent life forms called the Elvhen. Widely revered for their superior abilities in magic and technology, Elvhens dominated the cosmos with their advanced starships and constructs.
The Elvhens cherished knowledge and constantly explored the infinite realms of the cosmos to seek it. In their pursuit, they came across our universe and saw a flourishing blue planet brimming with life - Earth. Intrigued, the Elvhens disguised themselves as humans and roamed Earth, looking for treasures of knowledge.
One day, a young Elvhen named Lyrial came across a human child named Oliver. They became fast friends as Oliver was fascinated by Lyrial's abilities and knowledge. Lyrial taught Oliver about the cosmos, stars, atoms, and quarks, fuelling his fascination for the universe. Over time, Oliver developed a keen interest in rocket science and dreamt of exploring the cosmos himself.
As time passed, however, the Elvhen Council came to know about Lyrial's transgression - Elvhens were not to form bonds with other life forms. The council apprehended
Lyrial, confining him within Echsilon, and erased Oliver's memories of their friendship, their adventures, and the dreams of cosmos they had woven together. Lyrial's transgression was then erased from all chronicles, as if they never happened.
Two decades later, Oliver became a renowned rocket scientist known for his unconventional ideas, some eerily similar to Elvhen technology. And though he had no memory of Lyrial, the bond they once had left imprints on his human existence. One day, Oliver found a strange, cosmic relic among his old things. He didn't remember when and how he got it, but something about it was intriguing.
The relic turned out to be an Elvhen star map, a map of the cosmos far beyond human comprehension. Feeling an unexplainable familiarity, Oliver began working on it. Following the map, Oliver developed a prototype starship that was capable of inter-universe travel, something humans thought unachievable. This unexpected breakthrough earned him both admiration and suspicion from human society.
While the human world was shaken by this discovery, on Echsilon, Lyrial felt tears in the case of his life. The cosmic bond they had formed years ago, ignited by the star map, began to break his confinement.
Oliver boldly proceeded for the inaugural voyage of his starship, the 'Cosmic Mariner'. The ship followed the star map, traveling through wormholes and quantum tunnels. It ultimately found its way to Echsilon. As Oliver stepped off the starship, he was greeted by the sophisticated and bewildering city of the Elvhens. Despite the bewildering sight, Oliver experienced a haunting familiarity.
The Elvhen council apprehended him for trespassing but stopped short when Lyrial intervene. As Lyrial touched Oliver's hand, a flash of memories surged through him, restoring snippets of their forgotten friendship. Thus, standing against cultural norms and rules of the Elvhen, Lyrial and Oliver revived their bond, birthing an alliance between humans and Elvhens, leading to an era of inter-universal exploration, learning, and companionship.
Throughout the histories of Echsilon and Earth, the tale of Lyrial and Oliver stands as a chronicle of forbidden friendship, lost and found memories, and a testament to the possibilities that lie within the magnificent expanse of the cosmos.