kal'tsit (arknights), kal'tsit (maid) (arknights), mon3tr (arknights), arknights, highres, 2girls, :d, animal ear fluff, animal ears, arm behind back, ase1a, between fingers, black dress, black hair, black ribbon, border, chibi, closed mouth, colored inner hair, dress, from behind, green background, green eyes, grey hair, hair ribbon, holding, holding tray, juliet sleeves, long sleeves, looking at viewer, looking back, maid, medium hair, multicolored hair, multiple girls, official alternate costume, open mouth, outside border, puffy sleeves, ribbon, sash, short hair, simple background, sleeves past fingers, sleeves past wrists, smile, standing, tail, tray, turning head, very long sleeves, white border, white sash