"Everything is about whanau. Everyone works together, helps each other.
"I think my confidence before I came here, I was shy, I didn't talk to anyone. I was basically a loner. Now I'm standing on the pae [where orators speak] going around talking to everyone. I'm a happier person. More confident."
On Monday, Wednesday and Friday there is whakapakari tinana - exercise. In the afternoon haka, waiata or reo lessons. Tuesdays is cleaning day. Thursdays, maurakau (martial arts training). Lock-up is at 8.30pm, extra reo and whaikorero classes happen at night for those who've been outside on work programmes. Twice a week the entire unit practises their musical routine performed on whanau days.
Weekends are for sport or study. There used to be inter-unit sports before smuggling ruined it, he says. He's learned to paint and is taking an art course.
There's no guarantee he won't reoffend, but Damian doesn't see it that way. He's luckier than many in here. His family drive six and a half hours every three weeks to visit him.
"Before I came here ... I was behaving. It was just one mistake and then I ended up in here for just one thing. Yeah, I've learned from that. Dealt with it. My whole life has been crime-free except for the one incident so I'll be going back to a normal life."
Names of prisoners have been changed.