In Japanese this manga was called Watashi Ga Motete Dōsunda or, What's the Point of Me Getting Popular?. Superficially it purports to tell the tale of a girl who loses weight and suddenly finds herself popular, but in reality it's just another Shōjo designed as teen female wish-fulfillment and as such it's actually harmful because of the 'fat-shaming' attitude employed in it. There's nothing wrong with having a healthy fantasy life as long as it's kept in check (or untethered in creative writing or other art forms!), but the author went about this entirely the wrong way. There are ways of addressing issues or over- or under-weight in characters and this one was a fail in my opinion.
In the story, Kae Serinuma is a fujoshi - essentially a geek - who is into gaming, and who is also obsessed with male homoeroticism, picturing selected boys she knows, as being in gay romances in her fantasies. Since all the boys look like girls in these drawings that makes for rather interesting pairings! There are four boys in her life: Igarashi, Mutsumoi, Nanshima, and Shinomya, and only one of them might have had any real interest in her when she was overweight. Now they all do for sure, This is pretty shallow and she needs to reject them all with the potential exception of the guy in her gaming club, but she does not, despite the protesting title. She seems not so much enamored of them as she is enamored of their attention.
Where I had the real problem with this though, was after an accident where she's dinged by one of the players in a sport she's watching. Serinuma is knocked to the floor, and goes home after a brief recuperation at school. The next morning (or perhaps some unspecified time later - it was hard to tell), when she wakes up she has lost all her excess weight and then some. Not only that, her eyes have grown to huge proportions, her chin (which though prominent) never was a 'double' chin, has shrunk almost to nothing, her hair has become rich, thick, healthy, long, and shining and healthy, her head has shrunk or her facial features have expended to fill the whole face instead of the tiny center portion, and and her wardrobe has fantastically changed from baggy sweats to short, pleated skirts and tight sweaters.
Moreover, her legs have grown long and slim, and her breasts have miraculously tripled in size. In short, instead of a oval shape, she now has an hourglass figure. These factors combined are not the usual outcome of weight-loss, so one has to wonder if this is an illusion or wishful thinking, but by the end of the novel her appearance had not changed and all four boys desperately wanted to date her.
This sounded far more like wish fulfillment than ever it did an honest attempt to write a realistic, thoughtful, and honestly engaging story. But is this type of manga ever intended to be realistic? Wouldn't that defeat the purpose?! Maybe that's so, but this was all wrong for a host of reasons.
First of all, this shallow 'they like me now I'm anorexic and infantilized' is an awful thing to do to a woman. I expect it form some male authors, especially far too many of those who draw graphic novels, but there are different levels of 'fat' and they have all kinds of 'cute' names with which to euphemize them (BBW, chubby, corpulent, full-figured, matronly, plus-sized, portly, robust, rotund, and so on), but the question is not whether a person is overweight so much as whether they're healthy.
Clearly carrying too much weight, and eating poorly and getting no - or too little - exercise is a recipe for medical disaster, but you can be unhealthy whether you are under-, over-, or even at optimal weight, and you can likewise be healthy even when you might appear overweight to some overly-critical eyes. So the real question is over your health, not your weight per se.
In this novel, neither was the issue. The issue we're presented in (literal) black and white - and without a shred of supportive evidence - is that not only does no one love a 'fat' or 'dumpy' girl, but no one even notices her. As it happens, Serinuma is fine with this because she lives largely in her fantasy world anyway, but when she magically (and that's the only term employable here) morphs into 'a total babe' - as a frat boy would (and evidently these schoolboys do) perceive her - she makes no analysis whatsoever of her situation, and never once (not in the parts I read) harks back to how she was or makes comparisons or even tries to understand what happened. This tells me she is so shallow that it doe snot matter whether she is overweight, or a superficial model agency's dream applicant, or anywhere in between she's not worth knowing because there's nothing worth knowing about her.
I had wondered if, by the end of this volume, she might wake up and find she has dreamed this whole thing, or much better yet, that her knock on the head caused her self-perception to change, and everything that happened afterwards was because of this, not because she had literally physically changed. In my opinion, that would have made for a far better, more intelligent, realistic story, and a worthy read but I guess I shall have to write that one.
Women have hard enough time being blasted perennially with commentary from all manner of sources, most of them not even remotely medical, and most of them ads, telling her that she's ugly, fat, her hair is nasty, her clothes suck, she needs more high-heeled shoes, and she is useless in bed. Every time she passes through a supermarket checkout aisle, she has this blasted at her on the one side from women's magazines written by women it shames us all to report, and on the opposite side of that selfsame aisle, she is blasted by fattening snack foods, candies, and sugar-laden sodas. is this a problem? You bet your ass it is. Literally.
It does not help at all to have a manga written by a woman telling women this same thing. It's Junko food, and women need to stop letting authors like this one feed it to them.