Life, indeed, was good. In fact, Sunny would even go so far as to say that, currently, it was wonderful.
One would expect that being stuck in a cursed city located in the middle of an actual hell, surrounded by nothing but ruins and horrifying monsters, was not really the best way to live your life. But to him, this was somewhat of a paradise.
To his surprise, Sunny had found out that this type of existence suited him pretty well. He had no obligations, no need to worry about the future and, most importantly, was not required to interact with other humans.
Humans always made things hard and complicated. He was sick of them.
Being on your own was much better. He didn't have to pretend to be someone else, force himself to behave differently from how he wanted to, and strain his mind trying to understand people's convoluted feelings.
For the first time in his life, Sunny could simply be himself.