User blog comment:B214/Season 3 discussion/@comment-3965848-20150413173331/@comment-24098614-20150414012112

The problem with Ravel that I stated still continues even after the Raynare problem was solved he has become less dense but he is completely immune to this problem, and he has more understanding about the girls but the situation with Ravel is more complex than he can handle because they are doing this under the table without him noticing.

The problem with Ravel that Issei hasn't noticed about the setup still continues even after Volume 15 because the Phenex Clan was very sneaky in what they did but Rias wasn't at all tricked because she knows the details of politics of the Devil world, and how they operate.