shinigami a, kagamine len, kagamine rin, vocaloid, bad id, bad pixiv id, 1boy, 1girl, animal ears, bar censor, bdsm, blonde hair, blush, bondage, bound, brother and sister, cat ears, cat tail, censored, clothed sex, collar, cowgirl position, cuffs, cuffs-to-collar, girl on top, hair ornament, hair ribbon, hairclip, handcuffs, headset, hetero, incest, penis, ribbon, sex, short hair, siblings, sketch, straddling, sweat, tail, text focus, twincest, twins, vaginal