"Cosmetic surgery should be used as a tool to make your appearance closer to that of your true self" is such a good mindset. Of course, culture and exterior pressure can cause people to misunderstand what their true self is (anorexia, surgery addiction), but it's a good phrase to destigmatize elective surgeries that would otherwise be seen as vain or unneeded.
Also I really adore this manga's position of gay sex work as a place where young adult men can figure out where to go next. Not the only place to do it, or the best place, but a valid space to grow for a while.