Give Sakyō Raifukuji many conch shells.

Spend a cumulative total of 100,000 Gold.

View the event scene, "Parting of Ways."

Increase Yukimura Sanada's Rage intensity to Level 5 in battle.

View the event scene, "Six Coins Pledge."

Give Sakyō Raifukuji a conch shell.

Visit the castle town of Azuchi.

Achieve an "S" evaluation in battle 10 times.

Claim victory in the "Protection of Katsuyori."

Claim victory in the "Battle of Mikatagahara."

Raise your Friendship Level with 10 other officers to max.

Use Yukimura Sanada (Child) in a castle town.