1boy, 1girl, arknights, bangs, bar censor, bare shoulders, black choker, black nails, blush, breasts, censored, chinese commentary, choker, cleavage, feet out of frame, grey hair, hetero, horns, large breasts, legs, long hair, looking at viewer, lying, mudrock (arknights), mudrock (obsidian) (arknights), nail polish, navel, nipples, official alternate costume, on back, parted lips, penis, pointy ears, puffy nipples, red eyes, ru zhai, sex, smile, solo focus, spread legs, thighs, vaginal