This is a special to To Heart: Remember My Memories, which includes fighting scenes between all the female characters.

Villgust is a peaceful world that exists parallel to ours. However, now an evil deity has been revived and has sent evil creatures to destroy many countries, which left darkness and terror to rule the world. The peoples' prayers and cries has reached out to the goddess Windina and in order to free the world from darkness she chose eight brave warriors to defeat the evil deity. Although blessed, these warriors are unaware at the path chosen for them, thus the two groups of Kui, Chris, Fanna, and Youta must meet up with Murobo, Remi, Ryuquir, and Bostov before they can follow the path chosen for them and defeat the evil deity.

The previous season of 'Zero Duel Masters' was set in an alternate universe, so this season's plot is a continuation of the Duel Masters Charge. It follows the aftermath of the duel of Shobu vs. Zakira. (Source: Duel Masters Wikia)

A parody-esque epilogue to both Shamanic Princess and Mahou Tsukai Tai!. As a marketing ploy back when Shamanic Princess was first released, buyers who purchased all six first edition LD's of both Shamanic Princess and Magic User's Club, and sent in their proof of purchases before a deadline received a special OVA entitled Shamanic Princess vs. Magic User's Club. It was never sold in stores and was a special omake by the series' creators to the fans. The OVA contains an epilogue to both series, which is fitting considering they both came out at the same time.