Transmigrated as a villain's older brother

Aiden, a boy destined for tragedy, dies in a meteor impact during a trip with his father on an airplane. However, his father clones him to bring him back. But when Aiden dies again, he finds himself transmigrated to a post-apocalyptic realm dominated by diverse species. As he grapples with fractured memories and searches for his place, he reunites with the mysterious artifact that was tied to cataclysmic events. Alongside his newfound family, he must confront his own inner self and protect their fragile future from further conflict. ============================================================================================= Any feedback is appreciated. What to expect. Complex relationships Worldbuilding Multiple lead characters. Fantasy as well as sci-fi elements Very Slow progression. There are a lot of subplots happening. The world will continue to function with or without the influence of the mc. Don't expect a harem or fulfillment story. Overpowered protagonist. he will be powerful but not like he will overshadow everyone. This is my first time writing. I am new so you may find some mistakes and grammar errors. please point them out and I will correct them.