Chiyo-chikamatsu + astral path pain + Jirobo + earth main.

This is for SA I take it.
Start off using main characters punch to stop the poison.
Put Chiyo in back of the formation and put MC in position 1 to counter effectively.
Jirobo is in position 3 and Astral Path is in position 2.
Your combo should be around 12 at the end of the turn.
Shizune poisons you, before she can attack on the second turn activate Astral Path's mystery and start up Chiyo's combo again.
You will easily get a 25 attack chase out of this before she has a chance to heal.

That helps. Can we get info for all the MCs. So anyone else wondering can look it up as well.

Who is astral path pain?

Combo is not the same as number of hits, some moves do 10~ hits alone. Also 20+ is impossible, in our version highest possible is 20.

Mystery + 10 from Chiyo + 3 each from 3 other ninjas but this would probably be a bad team.

There is no Astral Path lol

He may be talking about Ningendo, or Human Path, who chases repulse to knockdown

So what would be a good combo team with these ninjas

So not true.

Chiyo + Ningendo + MC + Gold summon repulse to knockdown, followed by someone chasing Repulse/high combo

16 hits. Now before Shizune acts Ningendo starts the combo up again using his mystery.
32 total hits.

I never mentioned Shizune nor did op, just that max possible combo from mystery is 20. And you only need like 6-8 combo anyway to win Shizune/Karin if you use summons.