bouto (paranoia), kagamine len, kagamine rin, vocaloid, bad id, bad pixiv id, 1girl, 4boys, aqua eyes, bar censor, bisexual male, blonde hair, blush, breasts, bridal gauntlets, brother and sister, censored, cooperative fellatio, cum, cum in mouth, cum on body, double handjob, ejaculation, elbow gloves, facial, fellatio, fivesome, foreskin, gloved handjob, gloves, group sex, hair ornament, hair ribbon, hairclip, handjob, headphones, incest, kiss, looking at viewer, multiple boys, necktie, nipples, nude, open mouth, oral, penis, ponytail, ribbon, short hair, siblings, small breasts, surrounded by penises, teamwork (sexual), tongue, trap, twins, yellow necktie