User blog comment:B214/General Discussion/@comment-30924344-20170503223857

Ravel is the luckiest of the harem girls in the future because as Issei's manager, she will be with him nearly 100% of the time. Also thinking how Issei will be attending a lot of important meetings and Roygun has become his servant, a woman who is seemingly intellectual in politics, I think she will become his personal adviser plus harem girl since she too would be much closer to Issei and all that time beforehand is enough to develop romance.