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My bones, muscles, and even skin and other body parts felt as if they were rearranging themselves, it was slightly painful, so it wasn't something I particularly enjoyed! Nonetheless, it wasn't completely bad, and it ended in just three seconds. But it left me slightly exhausted. When I looked back into my own body, I suddenly realized my thin arms had gained a nice and decent amount of musculature, my belly had… six pack?! And my legs were also quite strong as well, the muscles were especially rigid, and my body emanated an aura of pure and raw strength.
Check "The Protagnist's Sister Is Actually the Strongest"!