In Marvel, My Sister Is the Ancient One

He transmigrates into Marvel as the younger brother of the Sorcerer Supreme, Ancient One.

He thinks he's landed himself a powerful backer and can coast through life without lifting a finger.

Then a System suddenly appears.

"Sign in to obtain the body of a God of Magic and instantly max out all magic abilities!"

"Sign in to obtain a Thunder Spirit Body and become the supreme Lord of Thunder!"

"Sign in to obtain the Infinity Gauntlet and instantly kill anything without any side effects!"

"..."

The Sorcerer Supreme, Ancient One: "How about you take over as Sorcerer Supreme instead?"

This novel and its characters are purely fictional. Any resemblance is purely coincidental. Do not imitate.