1boy, 1girl, arknights, bangs, bar censor, blush, breasts, censored, fellatio, fiammetta (arknights), hair between eyes, heart, heart-shaped pupils, hetero, kokihanada, large breasts, motion lines, nipples, open clothes, open shirt, oral, penis, red eyes, red hair, shirt, short hair, solo focus, sweat, symbol-shaped pupils, white shirt