If you don't know him, he's a huge Japanese artist that's very talented. I believe he's also acted in movies as well. I saw the ad last night on FB (which I like never go on, but I wanted to check on my family) and I was like hell yeah. My husband listens to his music all the time. It's rock but almost always mixed in with another genre.
My fav song of his (not his most popular)
Youtube link
Edit: Ok so I saw him live and he was super amazing. One down side was the sound mixing was a little off, it was hard to hear him sing. Here's a video a took. Look at that guitar playing!!
My video