For the next episode, play all the way through the Shevat sequence. In other words, just save the game and stop after leaving Shevat.
In the thirteenth episode of our deep-dive analysis of Xenogears, Id is revealed, Bishop Stone is transformed by Krelian, and we finally get to go inside the Babel Tower.
Time Codes:
1. Fei wakes up (0:00)
2. Id shows up (5:05)
3. Fight with Bishop Stone (17:25)
4. On to Babel Tower (52:48)