Rise of the trashed noble hero.

To reincarnate into a game or a novel we like, it's a novel idea that brings joy to many. To escape our reality and be thrust into another with the full knowledge of our current selves, is a fantasy that many have. A way to ignore the ugly of our own world. But what if this fantastical idea did come true?  That is exactly what happened to our main character. Harsha, a woman in her 30s, who had found professional success and had set herself up for life. Having read so many reincarnation stories herself, she was bound for success, right? Was it a romance fantasy? A dark romance fantasy? Was she a villainess? A side character? The main character?  Harsha, a beautiful, thick and curvy woman who was proud of her looks, found herself reincarnated in the RPG game she had been playing for the past few months, as the main character of course, not a romance fantasy unfortunately, but still one filled with monsters, hunting and adventure! Truly a great opportunity, right? WRONG!  Why? Because why is she, a beautiful woman, an adult in her 30s, in the body of a 16-year-old?! It is weird! Not to mention why is she in the body of a boy! She never signed up to get a third leg! Gone is her curvy voluptuous body in place of which is just skin and bones!  How is Harsha going to survive in the body of a 16-year-old boy at the peak of puberty that is also severely malnourished? Hence the legend of the great Hero Lucas who slayed the demon king, united the 7 continents, and ruled over all of humanity and brought about the era of glory and prosperity is born! (right?)