Kieran looked at Pride with questioning eyes.
Devil Force and Cardinal Sins force increasing in strength was a hard-to-come-by chance for Kieran but he would never forget about how terrifying both forces were.
Therefore, from the start till the end, Kieran maintained a certain level of vigilance and calmness; he would never lose himself in the process.
Therefore, it was natural that Kieran saw the scene that happened previously.
He was quite shocked by Pride being able to "borrow" [Dawn Sword] but what shocked him more was the intellect that the cardinal sins displayed. Especially Pride, his intellect was nearly human.
During his normal encounters, Kieran had slight discoveries along the way but they wasn't as real as the scene before this. Perhaps devouring the curse-like power increased the cardinal sins' intellect, perhaps it was something else.
