shikyou yoru, kal'tsit (arknights), kal'tsit (the remains of time) (arknights), arknights, absurdres, highres, 1girl, animal ear fluff, animal ears, apron, belt, black belt, black dress, breasts, cat ears, cat girl, collar, collared dress, dress, fingernails, frilled hairband, frills, green eyes, hairband, head down, indoors, large breasts, long fingernails, long hair, long sleeves, looking at viewer, maid, open clothes, open dress, open mouth, puffy sleeves, sidelocks, solo, sweat, sweatdrop, teeth, upper body, upper teeth only, white apron, white collar, white hair, white hairband, white wrist cuffs, wrist cuffs