Viewing this ending entirely on it's own merits it still comes off as way too rushed and messy...you can see they at least tried to end it with what the series was all about -- buff girls and nudity -- but whatever emotional string they tried building up to completely failed, with a timeskip that had no reason existing aside from the fact that the students had healed, Torako conveniently showing up out of nowhere and the repercussions of what happened.
Though it was at least nice that the story was building up to a "power of friendship" getting through Torako's sheer invincibility.