I just log in just to comment this on comment section. I don't know if the word "Bulimia" is what you translate from Korean as it is, but if so then the author of this Manhwa is really disappointing and need to recheck what the word they want to use on their Manhwa. Bulimia is a real disease that can harm the body.
For anyone that doesn't know what "Bulimia" is, it is a serious eating disorder is characterized by overeating, followed by a method to avoid weight gain. Bulimia is a potentially life-treating disorder. People with this condition eat uncontrollably, then they take steps to avoid gaining weight. Most commonly, this means vomiting the food before it get being digested. In summary, people who have bulimia won't even gain weight, heck not even get obese. In fact, they are malnutrition to the point that you can clearly see their ribs wrapped behind their flesh.
I know, 'cause I study on medical school and its worrisome that the author use the wrong word that can make other people have misunderstanding about the disease.