Ignis is just worried about him. He didn't mean to call him out like this but he knows that Prompto has a tendency to not tell if he's in trouble. Somehow, they all kind of have that trait. And it has to change. As soon as possible.

"Anything. I don't know how much I can help you but I want to be there for you. The same way you are always there for Noct and me." He gently shakes his head.

"Sometimes, you can't block the bad stuff out and have to deal with it. When it comes to that, we will be here to support you. All of us. Don't close us off, alright?"