Dual!

'''Dual! Parallel Trouble Adventure''' (デュアル!ぱられルンルン物語, Dyuaru! Parare Runrun Monogatari) is an animated science fiction television show created by Masaki Kajishima. It ran for 13 episodes in 1999 with a 14th OVA episode appearing in December of that same year. Produced by AIC it was released in North America under the Pioneer LCD label. The title has many of the same harem themes as Kajishima's earlier works on Tecnhi Muyo, with a story this time based entirely on a parallel earth where giant robots battle for territory.