Major ending spoilers follow for the final battles and post-credits scene. Defeating Balor does not immediately end the danger, because the Underworld survives through a separate supporting structure that must also be destroyed. The closing narration describes Dagda's recovery while the Promised One is missing, and the post-credits conversation shifts attention to Sothis and Balor rather than confirming a future game or expansion.
Why defeating Balor is not the final step
In Sirloin's ending and post-credits recording, the dialogue after Balor's defeat explicitly notices that the Underworld has not collapsed. The explanation is that his incarnation has given the domain enough substance to persist, with something deeper serving as its supporting pillar. Leaving that structure intact would also leave the possibility of a new Balor emerging from the domain.
This is why the story continues after the apparent victory. The danger is no longer only the defeated opponent standing in front of the party, but the body-like world he has prepared. Polygon's ending analysis likewise distinguishes Balor's defeat from the additional problem created by his surviving domain.
What Balor was preparing
The subsequent dialogue describes the Underworld itself as the vessel Balor was building. He used the souls he had gathered to reshape it into something with the power to oppose the Progenitor God. That revelation reframes the earlier scheme as more than a plan for ordinary revival or a temporary return to the surface.
The recording also makes the remaining danger explicit: another evil soul could claim that body. Destroying it therefore matters even after Balor's own defeat, and the characters recognize that doing so may cost their lives. This explains the final decision through the story's stated threat without requiring a theory about an additional hidden villain.
Why the final group goes deeper
The Promised One and Fortuna proceed toward the support of the Underworld rather than bringing the whole army. The conversation describes the expected collapse and the uncertainty of finding an escape afterward. Its practical concern is that, even if an exit exists, there may not be time to lead a large force through it.
After the final strike, the dialogue says the Underworld is beginning to collapse. The following narration describes the darkness lifting from Dagda and survivors returning to their homes or helping restore order. At the same time, it says the Promised One remains missing and is presumed lost in the Underworld, leaving an unresolved personal cost inside the broader victory.
What the post-credits conversation establishes
The post-credits scene contains a conversation addressed to Balor by the figure Polygon identifies as Sothis. The speaker responds to his return with forgiveness expressed through a maternal relationship, then offers to tell a story beginning with leaving a distant blue star. This continues the relationship between the divine figures after the apparent conclusion of the Underworld War.
The scene is suggestive, but a suggestion is different from an announced continuation. Polygon interprets it as groundwork for learning more about Sothis, while also presenting future DLC or another story as speculation. The scene itself does not name a confirmed expansion, provide a release date or establish that a particular fan theory will become the next game's plot.
Keep the conclusion separate from character epilogues
The central ending concerns the Underworld's destruction and the aftermath of the war. Character profiles and relationship outcomes are another part of the closing presentation, so a question about a particular pair should be checked against its own conditions rather than answered from the Balor scene alone. The supports and romance guide is a more relevant starting point for that relationship-focused question.
For the main story sequence, the important distinction is between defeating Balor, destroying the vessel that survives him and hearing the later conversation. Those are successive events with different implications, rather than proof that every remaining mystery has been resolved. Use the story progress overview for campaign navigation, and treat predictions about Sothis's future as interpretations rather than established ending requirements.