I think that your little bro just got Isekai'd to space and is now most likely sailing the stars in vast starships running on propulsion systems beyond our comprehension. Ad Astra, Marty, Per Aspera.

PS: if he isn't, and you're one of those things, then I hope you get sand in your eyes. Iron sand. As an eldritch being myself, subject to several petty assassination attempts, that stuff hurts. A lot.