Rule 34 Dev - 2boys 2girls black_shorts blonde_hair blue_eyes brother_and_sister commentary crossover detached_sleeves english_commentary headphones highres hoshino_aquamarine hoshino_ruby kagamine_len kagamine_rin mismatched_pupils molly_yancey multiple_boys multiple_girls necktie open_mouth oshi_no_ko pink_eyes sailor_collar sailor_shirt school_uniform shirt shorts siblings smile sparkle twins two_side_up vocaloid youtou_high_school_uniform|20389373784