1girl, animal_ear_fluff, animal_ears, aqua_hair, arknights, black_dress, blunt_bangs, breasts, bright_pupils, cat_ears, closed_mouth, cup, dress, green_eyes, kal'tsit_(arknights), large_breasts, looking_at_viewer, maid, maid_headdress, official_alternate_costume, rikuguma, solo, tea, teacup, tray, upper_body