UFO Ultramaiden Valkyrie 4: Banquet of Time, Dreams, and Galaxies

One lazy Sunday morning, Rika is taking things easy when a strange woman emerges from the bathroom mirror, scaring the living daylights out of her. The woman is Ymir, an old school acquaintance of Valkyrie who has come to Earth for a school reunion that, much to the surprise of Kazuto and the others, is to be hosted at the Tokino bathhouse! In addition to the various alumni of the Academic Planet descending upon the bathhouse in the most bizarre of ways, Akina is appointed as the priestess at the Farewell Star Banquet, a special ceremony held once every nine hundred years in honour of the passing of the Slepni comet. Now everyone, including the Valhalla Princesses, must head to a satellite near Pluto for this once in a lifetime banquet!