It's not an entirely pleasant experience. At the beginning, it focuses on a lot of fanservice, and we realize that it will be an OVA without content. However, when the episodes start showing an event at the academy, where the Tempest students will participate, the story becomes more enjoyable and not so much of a waste of time.
Unfortunately, since the beginning of this animation has two episodes focused on fanservice, without content, the overall rating is lower than it deserves for its last three episodes.
The score is justified by its beginning, not by the academy arc, if only this arc is considered, the score goes to 6