Help?

So...I was supposed to have written this yesterday but I got distracted by a show I was watching videos of the mistakes and screw-ups my favorite band has done and some videos my friend, Gazel wanted to show me. Anyway, because of those videos , we ended up talking about how awesome it would be if we started a band of our own. We said that if we were successful, that would be totally awesome and most of our funny moments would be us just goofing around and bullying each other. One of the funny moments of the band we saw were that they were about to sleep and they piled on one guy, said goodnight to the camera and got off. I said that if that were me on Gazel, I would most likely say goodnight to the camera and fall asleep on her. I can play a bit of guitar, Gazel wants to learn guitar as well, Kaylie, another (sadistic) friend, plays the drums and we all sing...a bit. Kaylie's the best out of all of us but since she plays the drums, it's quite hard to sing at the same time.
Another problem. A song has been stuck in head and I can't remember any lyrics other than the words "untamed, some way or day, i'm not even sure and I'm living a life untamed!". The rest of the lyrics are japanese so I have no clue if they're even correct. The tune is stuck too. I also know that the song was most likely an opening or an ending to an anime. I wish I knew what this song is called cause it's been stuck since yesterday and argh! I just wanna KNOW! If anyone knows, please tell me? I have to go now. Gazel is ruining decorating a picture of the singer of my favorite band so I have to go now. Bye~