This is a 1997 doujinshi OVA that exists because someone at Comiket decided the magical girl formula deserved to be demolished on home video. Diana swings a sledgehammer at every earnest beat, the transformation, the destiny talk, the hero's burden, and replaces them with absurdist comedy that only makes sense if you've watched enough mahou shoujo to know exactly what's being mocked. It's the kind of thing that circulates in whisper networks among people who collect VHS tapes, the artifact from when fan passion meant pressing your own media and selling it at a con. The obscurity is the point. A mainstream parody sanitizes itself. This one never had to.
Diana is a magical girl who exists in a world where the supernatural and the mundane collide in the most ridiculous ways possible. When she's called upon to save the day, things never go according to plan. Her transformation sequences are chaotic, her powers are unpredictable, and her enemies have a tendency to be more confused than threatening. What makes this OVA special is its commitment to comedy over convention. Rather than playing the magical girl genre straight, Diana treats every battle, every revelation, and every magical moment as an opportunity for absurdist humor. The tone is lighthearted and irreverent, poking fun at the very tropes that define the mahou shoujo formula. Fans who appreciate parody and don't need their magical girls played completely seriously will find something genuinely entertaining here. This is comedy first, action second, and it knows exactly what it's doing. Released in limited quantities at Comiket, it's the kind of anime that feels like a inside joke made tangible: clever, quick, and unafraid to be silly.