Season 1
A catastrophic earthquake has left Tokyo, and most of the Earth for that matter, under the sea. Aika is a salvager who retrieves various remains from the watery ruins. When Aika accepts the dangerous mission of locating and obtaining the mysterious Lagu, she discovers that she's not the only one after it.
Episodes
1 Trial 1: Beautiful Agent Apr 25, 1997 
2 Trial 2: Naked Mission Jun 25, 1997 
3 Trial 3: Takeoff Position Sep 25, 1997 
4 Trial 4: A Flower Blooming in Space Jan 25, 1998 
5 Trial 5: The Golden Delmo Operation Aug 25, 1998 
6 Trial 6: Delmo Operation: White Silver Dec 18, 1998 
7 Trial 7: Break the Decisive Battle! Delmo Base! Apr 25, 1999