It's doable but tough. They have some variance in terms of AI use. What I'd do is open with Solo, Kiryl, Alena, and Meena. Make sure Meena has a Meteorite Armband on.
Solo uses Omniheal, Kiryl uses Kabuff, Mina Insulates, Alena attacks. Go with Falcon Earings, you want the ITD crits. Ditch Meena for Ragnar, repeat the previous round. Sap's nice and speeds up the fight, but I don't think you can afford it until you knock one of them out. Ragnar can either use the life stone to heal or attack.
That's exactly what I did, except I swapped in Borya instead of Ragnar (on my successful run) and actually pulled off Oomph/Sap. Problem is, the first time...
06[01:09] * +hinode watches his party get nearly wiped out in ONE ROUND of attacks.
01[01:09] <+hinode> Well, I guess that answers my question!
01[01:10] <+hinode> Didn't even get a chance to put up Insulate or Kabuff!
[01:11] <@Ko-RomoComedyHour> Which boss, Nitorde?
[01:11] <@Ko-RomoComedyHour> ...
[01:11] <@Ko-RomoComedyHour> Hinode?
01[01:11] <+hinode> Foo Yung/Chow Mein.
[01:11] <@Ko-RomoComedyHour> Oh.
[01:12] <@Ko-RomoComedyHour> They're very random but not too hard if you're at a good level. What level are you at?>
01[01:12] <+hinode> 37-40.
[01:12] <@Ko-RomoComedyHour> Few more wouldn't hurt, though it does sound like you hit the bad rang eof luck there.
[01:13] <@SageAcrin> Meteorite Bracelet on the hero=needed at those levels.
[01:13] <@SageAcrin> (For healing.)
[01:13] <@SageAcrin> But yeah.
[01:13] <@SageAcrin> You had bad luck too.
06[01:13] * @Ko-RomoComedyHour nods.
03[01:13] * Ko-RomoComedyHour is now known as Kotono
01[01:13] <+hinode> Rock Throw+Punch thing+burning breath killed Kiryl and Meena on turn 1 and knocked Solo/Alena below 100 HP.
01[01:14] <+hinode> Not burning, but whatever the strongest fire breath is.
[01:14] <@SageAcrin> ...Rock Throw is his rarest move, punch is one of the rarest.
[01:14] <@Kotono> Pisaro and Cristo with Multiheal help, but you'll need Omniheal a bit.
[01:14] <@Kotono> Ouch.
[01:14] <@Kotono> That is bad luck.
[01:14] <@SageAcrin> The breath is not uncommon, but basically you ate the worst possible turn.
Shale: If you're willing to faq through the Pioneer Town sidequest, you can get a Meteorite Armband for free from it.