User blog comment:Maxx-DxD/How Irina can "Get with" Issei and not fall./@comment-16281343-20140630213408/@comment-4829046-20140704085419

Again, One does not need to describe sex for there to be sex in the story. In other words the Special Room can be there for as long as it likes. The series will end before they become College students anyway and there is plenty of time for the room afterwards =P