Here’s the link to Episode 5 of Re:Zero Season 3 Breaktime:
Apparently, it was leaked before the regular broadcast episode aired.
This short shows Al confirming that he came from Japan since he used utterances only a Japanese person would know, which had Subaru really stoked. Al also knew Subaru’s nickname for Beatrice, Beako, and I suspect what I brought up in last week’s theory post about Al may be relevant.
We saw in Season 2 that Echidna’s trials were probably based off of or use the Tome of Wisdom with how it could fully reconstruct the past, show possible continuations of failed loops, and show true glimpses of the future, likely regardless of whether it’s a failed loop or Subaru’s final good loop for an arc. As it contains all of the world’s past history, current information, and possible futures, it may be the most broken Authority to ever exist.
Thus as I’ve speculated last week that Al was summoned after Subaru but came to Re:Zero’s fantasy world before Subaru did, Al would be the immediate previous iteration of the hero of the story who chose his lover over the world, and his summoning might’ve been meant to be a trial run for Subaru’s success.
The group from 400 years ago may have peered through the Tome of Wisdom and saw that the world has been destroyed and reconstructed constantly. The Tome of Wisdom should be powerful enough to see the history of previously destroyed worlds, and that’s how the grand plan was created in the age of Satella.
Al and Subaru might not have been meant to be the hero of the stories for their respective times with Al being the immediate previous iteration of the Hero, but the group of characters from 400 years ago forcibly injected them into the story for their plans, possibly to use Al as a trial run for Subaru’s success.
That means Beatrice was also Al’s partner much like is the case with Subaru ’cause she was created to be the partner of the hero of the story with the group from 400 years ago hijacking the path of the story so that the cycle of the world being destroyed and reconstructed that I believe exists ends. I believe Al and Subaru may have originally came from the same soul, being splinters of the same person, which would be why they have the same nickname for Beatrice.