I just finished the game and I loved every moment of it. Though Guillo's death was quite contrived. I do still have a lot of questions. How did Geldoblame become who he is in the first game, I guess he went mad from Verus's treachery? It did seem that they had some kind of romantic relationship. I still have no idea who Wiseman or the Dark Brethren are. What happened to Hassaleh by the time of the first game? It feels like you kind of set the spirits of Malpercio free in Origins, but then Malpercio is in the first game anyway? There are also just a lot of characters that have disappeared without a trace by the time of the first game. It's still an amazing prequel that makes you rethink everything the first game offered, but there were definitely some disconnects, unless I just missed things, which is entirely possible.
Thinking about it more, I think Melodia was probably the child of Sagi and Milly, but that baby in the end was just Kalas after being created. Which would make Melodia the grandchild of Verus and Baelheit. No wonder she had issues.
From what I remember and read back then
- Geldoblame was apparently involved in a romantic relationship with Verus, he loved and revered him so much than when he was discarded he just lost his purpose in life. Then out of nowhere he is asked to be emperor, out of spite and hate he just turns a bit mad
- Wiseman and dark brethren are malevolent entities more or less, the Wiseman lives by draining people's spirits and so he does.
Dark brethren were sealed in the past as you saw, they can only infuse you with malefic power in exchange of your souls which is what the Malpercio group did
What happened with Malpercio is that the group of five retained part of their will and humanity until Baten Kaitos Origins because what drove them and gives them power was their hate for the Wiseman, once he is killed by Sagi their souls are finally put to rest and thus what remains in the End magnus is only the power of the Dark Brethren, hate and rage without a shred of humanity
I can't remember the exact list of characters missing from Origins to the first BK, maybe a few (Palolo and the Hassaleh part?) but I wouldn't sayt a lot.
Melodia is 100% the child of Sagi and Milliarde, remember her hair when she comes back in the end, remember where she was born and by who she was raised, also remember she was linked to Malpercio because her father had a part of Malpercio sealed in him, she probably had some remnants of it (the bad part, because tragedy is so much better) inside her. It also fits with her parents death and Sagi&Milliarde being nowhere to be seen in Baten Kaitos
It's pretty sad really, in the end they died by a random disease, leaving an infant that turned mad because of her father's heritage and ended up resurecting what was left of Malpercio.
The end of Baten Kaitos also hints that both Xelha Melodia understood what was Malpercio, feeling sorry for "him" and being relieved that he is finally able to dissapear.