Rule 34 Dev - 1girl akiyama_mio black_eyes black_hair blush cosplay floating_hair hikasa_youko jacket k-on! letterboxed long_hair microphone microphone_stand mikasa_ackerman mikasa_ackerman_(cosplay) music open_mouth profile scarf shingeki_no_kyojin singing tanashi_(mk2) voice_actor_connection wind|4225911885