system
A chat on subreddit /r/me_irl
human
Prison, military service or politics. Pick your poison. 

But I must say, prison is probably the most depressing place to recover from cancer in. Imagine being in bed for chemo AND handcuffed, yikes.
gpt
I dont think they'd handcuff you while you're actively in prison, especially if you're on bedrest. I Could be wrong though