Aoi Takeuchi

A compilation of the original OVA series with 7 minutes of new content at the end.

In the year 2020,​ Earth is conquered by a malevolent alien life form.​ The last remnants of humankind barely escape death by hiding in the oceans and creating underwater ."Aqua-bases.​" One hundred years later,​ they are attempting to retake their world.​ The human survivors create a deadly strike force composed of one human and four,​ cybernetically enhanced,​ voluptuous young women: the motherly Midi,​ the spirited Voogie,​ the hard-hitting Rebecca,​ the innocent Merrybell,​ and the pensive Shiori.​ Specially trained and armed with the latest weaponry,​ they carry out guerrilla attacks against the alien invaders!

Yusuke, an orphan, literally has Rouge, the amnesiac oldest daughter of the Underworld's deposed royal family, fall out of the sky into his lap. She is soon followed by her two younger sisters and also their family's enemies. Rouge must decide if she wants her memory to return, while Yusuke must deal with the upheavals in his life the princesses have caused.