>>43323117Eternatus crashes down to Earth and is defeated by Zacian and Zamazenta. This is the Darkest Day.
Eternatus is still alive, constantly farting out Dynamax energy, which Pokemon can use to Dynamax and humans can use as a power source.
Galar uses Eternatus's farts as its main source of power, meaning they basically have infinite energy.
Rose finds out that Eternatus will wake up after about 1000 years and cause the Darkest Day again and a resource crisis.
Rose plans to awaken Eternatus and have Leon catch it so that it'll be under human control and fart for the rest of eternity and never attack again.
This unfortunately requires Eternatus to be awoken and cause the Darkest Day prematurely, but Rose trusts Leon's skills as the champion to quickly catch Eternatus.
He explains the plan to Leon. Leon agrees and says he'll do it right after the championship.
Rose spergs out and says Leon has to do it now, Leon thinks Rose is a sperg, and Rose proves Leon right by starting the Darkest Day the next day.
He fights you in order to slow you down because you're a child, there's a fucking dragon on the roof, and he thinks Leon has the situation under control.
After you defeat him and catch Eternatus, he's ashamed of his actions but also happy that Galar's future has been secured. He turns himself in to the police because he no longer sees himself as necessary.
Basically, his actions make perfect sense if you view them from the perspective of an idiot with noble intentions.
