User blog comment:SpookyBoogie27/Light Novel Spoilers/@comment-99.251.124.43-20140207040724/@comment-16281343-20140207043237

It would be fun to see Ravel getting engaged to someone and Issei doing the save-Rias stunt again.

~Although that wouldn't happen since the Phenex family already etrusted Ravel to Issei.