[Interstellar + League + Superpowers + Genius Protagonist + Beloved by Everyone]
When Shen Qilan wakes up, she discovers that she's switched bodies with her nemesis. She calmly makes a call. "Zhou Shixu..."
The person on the other end pauses for a long while. "...My name is Cassian."
It's fine. It's just that she mistook someone because she can't recognize faces, and just that she switched bodies with another nemesis. It's fine!
But when they finally figure out the rules behind their body swaps, Shen Qilan wakes up in yet another unfamiliar body. "?" Who is this now?!
Damn it, the heavens are just messing with her!
Lots of people know about the defective student at Xisonoxi Military Academy, the one with 3S mental power but no superpowers. She's become one of the main team members for this year's Artemis Tournament.
They've heard Shen Qilan is from an abandoned planet. They've heard she's failed both her theory and military equipment classes. They've heard her boast that she'll defeat every S-rank superpower evaluator. They've heard she got into the school through connections, yet acts incredibly cocky...
But they've never heard that her powers can suddenly grow weak or strong, or that she can switch between different abilities! And why do the abilities she uses seem so familiar?!
Shen Qilan waves her hand. "Oh, that's just the basics for a genius."
Years later, Shen Qilan becomes the Federation's youngest top executive, an above-S-rank superpowered individual, and a 3S mental-power mecha pilot. The entire Federation is infatuated with her.
Everyone: Wait, so you really are a genius!
(The author is a fan of Zaguo. The worldbuilding early on might be a little similar, but the story later adds lots of the author's own ideas. If that bothers you, please don't read! (´∀`))