The Legend of Jack the Colossal

Jack a teenager suffering from a rare condition that has been preventing him from developing into an average Colossal BMI has been discriminated against throughout his life because of it. His world comes falling apart, losing everything he once loved and ever lived for. Unwillingly transported to a world he knows nothing about, a world of magic and swords. A world where his condition is the norm. Will he ever return to seek vengeance or will he grow fond of this new place, he might eventually call home?