Suikoden 2 - Defeat Luca Blight in 1 turn with all 3 parties

My teams were overprepared(may be I should have tested it out before recording) In Viktor battle some characters didn't even have their turn up. Use leveling trick to get Yoshino/Millie level to 60s to get their level 4 lightning spell and strengthen Meg, but it seems to be not necessary. All other characters are at level 40.