Legend of the Last Labyrinth(1997)

Legend of the Last Labyrinth is an anime series that begins when Rouge, an amnesiac princess from the Underworld's deposed royal family, literally falls from the sky into the life of Yusuke, a young orphan. Her arrival quickly spirals into chaos as her two younger sisters descend after her, along with dangerous enemies bent on their destruction. Caught between his ordinary existence and extraordinary circumstances, Yusuke must navigate the upheaval the princesses bring to his world. Meanwhile, Rouge faces a deeper choice: whether to reclaim her lost memories and the weight of her royal past. As the group grapples with threats from all sides, they're forced to confront what family truly means and the cost of power in a world where the Underworld's politics threaten to consume them all.