S01E12: Grandis and Her First Love
When the Nautilus docks on an island to reestablish supplies, Nadia bonds with Grandis when the latter tells her how the first man she fell in love with turned out to be a treacherous cad.
Previous Episode 
Season 1
Girl at the Eiffel Tower
S1E1 / 13 Apr 1990
The Little Fugitive
S1E2 / 20 Apr 1990
The Riddle of the Giant Sea Monsters
S1E3 / 27 Apr 1990
Nautilus, The Fantastic Submarine
S1E4 / 04 May 1990
Marie's Island
S1E5 / 11 May 1990
Infiltration of the Secret Base
S1E6 / 18 May 1990
The Tower of Babel
S1E7 / 25 May 1990
Mission to Rescue Nadia
S1E8 / 01 Jun 1990
Nemo's Secret
S1E9 / 08 Jun 1990
A Crowning Performance by the Gratan
S1E10 / 15 Jun 1990
New Recruits for the Nautilus
S1E11 / 22 Jun 1990
Grandis and Her First Love
S1E12 / 06 Jul 1990
Run, Marie, Run!
S1E13 / 13 Jul 1990
The Valley of Dinicthys
S1E14 / 20 Jul 1990
The Nautilus Faces Its Biggest Crisis
S1E15 / 27 Jul 1990
The Mystery of the Lost Continent
S1E16 / 24 Aug 1990
Jean's New Invention
S1E17 / 31 Aug 1990
Nautilus vs. Nautilus
S1E18 / 07 Sep 1990
Nemo's Best Friend
S1E19 / 14 Sep 1990
Jean Makes a Mistake
S1E20 / 21 Sep 1990
Farewell Nautilus
S1E21 / 26 Oct 1990
Electra the Traitor
S1E22 / 02 Nov 1990
Young Drifters
S1E23 / 09 Nov 1990
Lincoln Island
S1E24 / 16 Nov 1990
The First Kiss
S1E25 / 30 Nov 1990
King, the Lonely Lion
S1E26 / 07 Dec 1990
The Island of the Witch
S1E27 / 14 Dec 1990
The Floating Island
S1E28 / 21 Dec 1990
King vs. King
S1E29 / 11 Jan 1991
Labyrinth in the Earth
S1E30 / 25 Jan 1991
Farewell, Red Noah
S1E31 / 01 Feb 1991
Nadia's Love
S1E32 / 08 Feb 1991
King's Rescue
S1E33 / 15 Feb 1991
My Darling Nadia
S1E34 / 22 Feb 1991
The Secret of Blue Water
S1E35 / 01 Mar 1991
The New Nautilus
S1E36 / 08 Mar 1991
Emperor Neo
S1E37 / 29 Mar 1991
To the Sky
S1E38 / 05 Apr 1991
Successor to the Stars
S1E39 / 12 Apr 1991
Noriko Hidaka
Jean Roque Raltique (voice)
Yoshino Takamori
Nadia la Arwall (voice)
Toshiharu Sakurai
King / Hanson (voice)
Yuko Mizutani
Marie en Carlsberg (voice)
Kumiko Takizawa
Grandis Granva (voice)
Kenyu Horiuchi
Sanson (voice)
Akio Otsuka
Nemo (voice)
