os-tan
2k-tan, 98-tan
45acp
2girls, ball gag, bdsm, bondage, bound, bulge, erection, erection under clothes, feet, femdom, futa with female, futanari, futasub, gag, gagged, greyscale, legs, lineart, monochrome, multiple girls, penis, thighhighs
photoshop (medium)