User blog comment:B214/High School DxD EX/@comment-50.139.232.230-20151108154354/@comment-50.139.232.230-20151108155610

Also Airi doesn't really need the Scale Mail unless it is emergency. She already has the power of Gaia ( Mother Nature) to back her up.

Also, her role seems to be more like a long-range fighter, summoner, and mission control. Basically combining Asia's healing power with Issei's souped up Crimson Blaster