happy birthday (artist), hoshiguma yuugi, hoshiguma yuugi (kimono), touhou, 1girl, alcohol, arm up, bdsm, blonde hair, blush, bondage, bound, breasts, chain, cleavage, cuffs, cup, demon girl, female focus, grin, horns, japanese clothes, kimono, large breasts, letterboxed, long hair, naughty face, night, no bra, off shoulder, outdoors, red eyes, sakazuki, sake, single horn, sky, smile, solo, spill, very long hair