https://www.youtube.com/watch?v=gNOI4kpg8xs Iroha cover premiere
https://www.youtube.com/watch?v=kp653OI0mPA Botan BF6
https://www.youtube.com/watch?v=xpECwR0AD7Q Lui Niconico-san
https://www.youtube.com/watch?v=74TukfLHrls Hajime Judgment