When Manny returned home from his harrying experience watching Eddie rob a woman, where did he sit down?

Manny sat down of his father's cushioned chair.

Then I sat down on Dad's cushioned chair and watched them. I won't say why, because there's no way of explaining why, even if I could or wanted to, but I knew, as my eyes got drowsy and the bright walls of the room glowed around me, that I'd never again see anything so wondrous as my two sisters lying on the couch.