User blog comment:KID2NR/Second Season Confirmed/@comment-27.32.53.44-20120910071409/@comment-1359322-20120912082806

The focus characters are:

Volume 1: Asia

Volume 2: Rias

Volume 3: Kiba

Volume 4: Gasper

Volume 5: Koneko and Saji

Volume 6: Asia

Volume 7: Akeno

Volume 10: Issei and Rias