Once you do, Jin is called away by Adachi and decides what to do about the incoming Raiders. explore the back of the closest tent marked with the flower symbol of Yarikawa: here you should examine Mother's Poem, the Clan Sakai Scroll, and the Broken Blade.
In the memory, follow the footprints of the soldier East along the coast to find the Samurai camp.
As always, look for the white tree and deer to find it. That spot is Survivor's Coast, the area in the North-West of Iki Island where Jin first arrived. Once you do, Jin will say that he still feels troubled, and that he should return to the last place he set foot on Iki Island fifteen years ago.
The final Memory is only unlocked after you initiate the other four memories.
