Thank you guys, I have full Kensei starter army and some additional samurais at the moment and my bro has martial masters.
I think I will go with 5 bushi buntai models on each side,
1 guy will play leader. He will do all army dice rolls and will control the leader.
2 additional players will control 2 models each.
Every player will get his own sheet with basic rolls and basic rules and skills of his controlled soldiers. I plan to spent about 30 minutes to introduce the rules.
For the second game I plan Grand Tournament
8 players, each will get his own samurai with character sheet. Swiss tournament System 1 to 1 combat for three turns 15 minutes each. First Round: Challange. Each tournament turn for three rounds (probably I have to test this). Points scoring: Light Wound 1pt, Grievous Wound 2pt, Unconsciouss 5Pt. This is subject of test as well. Wins as additional points, Honorary behaviour=additional points.
What do you think?