To put it simply, story follows the live of Imperius and Tyrael, but other members of Angiris Council can be counted as main characters - same way as Rias Gremory and his peerage's members.
To put it simply, story follows the live of Imperius and Tyrael, but other members of Angiris Council can be counted as main characters - same way as Rias Gremory and his peerage's members.