with 6 episodes premiered on August 5, 1989

with 45 episodes premiered on April 16, 1988

Wataru, a boy in grade four, gets blown into a world in another dimension, Shinbukai, where he is told he is the hero of this world. He becomes able to summon Ryujinmaru, a robot-like partner, and he… see more

with 46 episodes premiered on March 9, 1990

The other-dimensional world where Wataru had secured peace is in danger of occupation again. Wataru is back with an upgraded Ryujinmaru to stop Dowarudar, the evil of all evils.

with 51 episodes premiered on October 2, 1997

Wataru, a fourth grader, is once again taken to Shinbukai, a world in another dimension, as its savior, ten days after he had last returned from there. He heads for the Soukaizan, invaded by the Dona… see more