This is Dolce. He isn't an arcade gamer, he's a human sequencer. Dolce is a top beatmania IIDX player. In the past, he's either placed or won Konami's Top Ranker music game tournament. It's easy to see why.
More from Kotaku
I fail to see how this is considered fun. Also, how the hell do you even process the information fast enough to press the buttons?
Oh, and I can think of a better use for his fingers... -_-