Jane Val

Newspaper reporter Robinson Sucroe is sent to live on a tropical island to write about deserted life for The New York Herald. Only problem is, the island is home to groups of pirates and castaways, both of which want their existence kept a secret from the outside world. So now Robinson must write untrue stories about the island, keep their secret, and keep famous reporter Grumbleston from spilling the beans to the head editor.

The series follows the adventures of lighthearted Jean-Paul Moulin, a police Commissaire, and his team as they solve crimes.

The story revolves around Duke Fleed who is a survivor of the Vega Star, raised by Dr. Umon as his adoptive son, and known as Daisuke Umon on Earth. Years after his arrival, he's faced with the threat of King Vega and his army, who want to conquer the Earth. With his friends Koji and Hikaru (and later his kid sister Maria Grace), Duke decides to fight back using his best weapon, the almighty Grendizer.