Hi! I was there too and i have to say it was awesome. I was standing with a friend on the right side, so we could lean on the walls, because there was still one hour waiting when we arrived.
I think I became a fan of them now. I didn't know about them, when I heard about the concert. But I wanted to listen to J-Rock live, so I bought the ticket. I searched some songs of them on Youtube and I got addicted to 'Gather Roses' when I first listened to it. And I was very excited and happy when they played it live!! I still don't know the names, only the singers, but I loved the guy with purple hair - he was smiling through the whole show :D and the drummer had such a cute puppy face. Haha. I was disappointed that the concert didn't even last for two hours, I wanted more! After the show I bought a poster (it's a pity, i hadn't more money with me). I hope, they will come to Vienna again!