User blog comment:B214/Volume 23 discussion blog/@comment-31764731-20170801233721/@comment-26709288-20170813201853

A King shouldn't just rely on one servant to do all his strategist. The whole point of being a King is to command and utilizing your team. So simply relying on Ravel to do it all isn't a good option

It's obvious by now Ophis and Lilith aren't going to combine so unless Issei uses GR power he's going to have to rely on the power he has.