[Angel at Dusk Original Soundtrack] 13-dusk-b-05 

Love the faux 3D effect on the walls in that stage.

"One by one, the angels began to re-acquire a concept of self. First and foremost they regained the sensation of pain, re-establishing the concept of [Discomfort] in a world otherwise replete with happiness. Next, they felt hunger. If they chose to avoid internal predation out of fear of causing conflict, they would now suffer from hunger. In order to escape from these feelings of discomfort, they began re-developing the ability to think. To develop intelligence takes millions of years, but to the angels and their 2.3 billion year history, it felt like no more than a moment. This would mark the end of their longstanding stability and tranquility. Perhaps this was their way of adapting to their now deeply inhospitable world. Perhaps even mankind's perfectly created angel biome, unable to withstand the passage of 2.3 billion years, had begun to deteriorated as well. Perhaps bursts of gama ray radiation had caused the angels bodies to mutate against their will. [Sin], a concept which had perished from the Earth so long ago, has now returned to the angels."