The first few episodes only exist as a reminder that this universe has magical fights, too, and not just boxing matches. Apparently boxing has just become all the rage and everyone is doing it, like how a few seasons ago being a magical girl was all the rage and everyone was doing it. Such a confusing setting, but the story was fun I guess. The last episode does double duty as an epilogue and a "the beach episode." Truly a masterclass in how to make bonus content to put on the home release. Ultimately it doesn't add much to the main story, you could skipall 3 and not miss much. I enjoyed it the same way you might enjoy watching reruns of that show you've seen a thousand times already. It's mildly entertaining, but you're really only watching it because nothing else is on.