User blog comment:B214/High School DxD New 12 discussion/@comment-60.53.98.21-20130923062332/@comment-1359322-20130923070028

Azazel didn't show any trouble against Katerea in the LN, he was playing with her until Vali betrayed him, so he decides to end the fight quickly and use the armor that's all. Well maybe to show off the sucsess of his research on Sacred Gear.