“As I walk out of his room, the shock of his response morphs into fury and indignation, propelling me like a lit fuse burning through gunpowder.“ The tone of this sentence is angry because of the words the author uses to describe the character in that moment. Words like shock, fury, indignation, and gunpowder all speak to violently angry emotions. I feel sorry for emphathetic to the character, so that's the mood.