Supergirl au

When a long-lost pod from the Phantom Zone finally crashes to Earth, Supergirl's world is turned upside down. Inside are Kara's two 15-year-old half-brothers: Nate, the fully human genius wielding his grandfather Azmuth's universe-altering Omnitrix, and Sebastian, a blue-tailed Nerjiak hybrid with a mastery over golden lightning and runic magic.
As Nate (Omnishift) and Sebastian (Seeker) join Kara to protect National City, the threats multiply. From a dangerous Daxamite alliance and the dark awakening of the Worldkillers, to the creation of dark Kryptonian clones and Lex Luthor's ultimate ideological war, the team is pushed to its absolute limits. Friendships will shatter, allegiances will divide over alien rights, and the very definition of heroism will be questioned.
Amidst the chaos, epic romances forge new destinies. Witness the legendary evolution of Supercorp as Kara and Lena (Witchetek) navigate betrayal and forgiveness, the fierce and unyielding bond between Alex and Sam, and the complex loves of a vastly expanded team of heroes.
Blood makes them family. The Omnitrix and magic give them power. But the fight for truth, justice, and each other is what makes them heroes. Welcome to a new era of Superfriends.