This is a strategy I came up with and posted on GameFAQs several years ago. I haven't gotten the chance to make a video of it until now.
The strategy is simple. It may require a bit of luck, but other than that it's pretty straightforward. Leveling your characters helps them to survive, but I was able to do this strategy without anyone dying at lv.38.
Key items needed:
•Speed Chain - Beat the dance contest in Sol then talk to the Disco King
•Spikefish Flute - Exchange for 200 points at the fishing spot near Buma
•Dark Talisman - After defeating Songi for the 3rd time, go to the genesis tree in West Voz Forest and get the Dark Stone. Take it to Zalan in Jeremi to change it into the talisman
(less info)
Actually, I've been reading the legaia board on gamefaqs and I was like 0___0 when I found out that you're ssjgokou. You're cool! ^--^