Superman: Birth of a Hero

Supergirl AU. In another timeline, Zor-El and Alura had a son and a daughter. When Kara is lost to the Phantom Zone, Val-El is sent spiraling elsewhere. Now in the Marvel MCU, Val will experience a life much like his cousin Kal. But when forces outside of the world he calls home threatens all that he holds most dear, he must take up the mantle and become a Superman.