Heartbroken by unexpected death of my sweet boy

I woke up for work earlier this week and normally my cats would come to greet and meow at me. This morning one of them was not there and I saw him on the couch where he would sometimes sleep in an odd position. When I called his name he didn’t move. His face was hidden by a blanket and when I moved the blanket, I saw him dead already in a state of rigor mortis.

I like to think he passed peacefully in his sleep. He was only 10 years old and was completely normal that night before. I can’t get the image of how I found him out of my head and I’m just so sad. He was our soul cat and I feel so empty without him. I just wish I could have said goodbye and that I could have been there for him :(