So, I went to the Outlands with Deucalion only, and later, in chapter 7, told Oswald to bring Bella. And then I got this weird scene which makes no sense:
You are welcome. You may also want to double-check Pen's pronouns in the first chapter(s) — in my playthrough they were female, and their pronouns were a mix of she/he/they. I was just too lazy to take screenshots then.
