kiri (lwp01 lav), kagamine len, kagamine rin, vocaloid, bad id, bad pixiv id, 1boy, 1girl, arms behind back, bdsm, bite mark, biting, blonde hair, bondage, bound, bound wrists, breasts, brother and sister, closed eyes, fingering, forced, grabbing another's breast, groping, hair ornament, hair ribbon, hairclip, hand under clothes, hand under shirt, headphones, headset, hetero, hickey, incest, molestation, pussy juice, ribbon, shirt, short hair, shorts, siblings, small breasts, tears, text focus, trembling, twincest, twins