krux (k krux), mari (blue archive), blue archive, gold armlet, commentary request, highres, 1girl, :o, animal ear fluff, animal ears, aqua eyes, aqua neckerchief, armlet, black dress, blonde hair, blush, cat ears, cat girl, dress, hair over shoulder, halo, holding, holding pencil, indoors, jewelry, long dress, long hair, long sleeves, looking at object, looking down, multicolored dress, neckerchief, nun, on floor, open mouth, pencil, sailor collar, sitting, table, two-tone dress, wariza, white dress, white sailor collar, writing, yellow halo