How To See Liu Bei For Real At Koshi Castle:

Once you enter battle with orochi about ten mins. later Liu Bei will pop out and say "Zhuge Liang,Zhao Yun,brothers!you are all still alive"
Zhao Yun would say"Liu Bei!!"
Then Orochi says "WHAT!!!"
Remember:You must kill Da Ji first.
Before warned:You must kill Da Ji within 10 mins Or Orochi will say "Ha!Now
Liu Bei can't be freed!" and the battle is a failure.