Get a paw from the white mountain tiger (very tough mob) on the way to the Buddist temple.
Note: If you die to this mob, you cannot resurrect, as it will drop all of your items on the floor.
Take the paw to the mysterious shugenja. Give paw shugenja.
He'll give you a pouch of tiger powder.
Find the merchants at a A Crossroads at the Tokaido.
Ask merchant goods.
He'll give you a letter of recommendation.
Find Rumuki in Osaka.
Give letter Rumuki.
Ask Rumuki business.
He'll ask you to bring him the head of Pereira.
The sailor before Captain Pereira will want a bowl of chazuke in order for you to pass.
You can buy this at the teahouse. Hunt the teahouse owner, Miyu, to get there.
Alternatively, just kill the sailor.
Kill Pereira then get head corpse and take it back to Rumuki.
Note: You now have access to a hidden safe room called "Inside a Hidden House."
Ask Rumuki kolat and he will transfer you.