@WoodyCyber yes it is seinen. Seinen is a demographic, not a genre, it's a classification based on who the publication is marketing to not the contents of the individual stories. This comic runs in Evening, which is a bi-weekly seinen magazine, therefore this is a seinen manga. Just like how Non Non Biyori is also seinen, because it runs in Monthly Comic Alive, another seinen publication.
@ColorlessBoy I think the implication there is that nameless-chick not being into a guy because of his height and sort of feminine looks says more about her than it does about him, or something. Y'know, the beauty within over the outside sort of deal I guess? I prefer the realistic view that both inside and out matter for attraction, myself, but I'd have to say even with that in mind her telling him to his face it's because of his looks means she has kind of a bad personality anyway.
@Glomoro Yeah, that's what I figured as well, but I thought it was kind of silly to say that, even just as a figure of speech, since it was indeed the reason. Definitely agree on the other girl having a bad personality though, but then again one could appreciate her for her honesty? It must suck to know a girl refused you for your height and looks, but personally I'd rather know the reason than agonizing over what it was. Still I guess she was a bit too blunt.