Honestly, I don't even know what show this is. When I asked they rolled their eyes and said some unintelligible name so fast I couldn't process it.  The fat chick is Robin from Fire Emblem: Awakening, and the girl to her left is crossplaying as Henry from the same game. Oddly, despite there being a female version of Robin, the hairstyle suggests the fattie is crossplaying as the male Robin.