Hail_The_loli

In the northern part of the world, a long-standing battle between various races and the demon race has finally reached its end. The Demon Lord, a figure with black hair, red eyes, rules from her obsidian palace, having repeatedly defeated the Goddess, the strongest being in the world. However, she refrains from killing her, knowing she will only be reborn to lead another attack.
As the goddess kneels before her, badly injured and helpless, the sounds of explosions echo outside, signaling the imminent victory of the alliance. Despite her immense power, the demon lord acknowledges the demon's overall weakness compared to humans and the Alliance. The development of fighting energy and mana has allowed ordinary humans to fight demons, leading to the demon army's defeat.
Aware of the Alliance's intent to enslave the abyssal demon, the Demon Lord decides to cast a forbidden spell that will cost her life. As the Alliance forces storm the palace, they hesitate upon sensing the spell's energy. The Demon Lord vows to resist and be reborn to save her people.
Meanwhile, the goddess reflects on the demon lord's past treatment of her and acknowledges her respect and dedication to her people. As the demon lord prepares to cast the spell, the goddess asks if she can abandon her plan and live freely. However, demon lords are duty-bound to restore the demon race's glory and protect her people.
Understanding the demon lord's resolve, the goddess readies her sword, intending to clash with the demo lord's forbidden spell. The resulting explosion creates a mushroom cloud, marking the end of the conflict and the start of a new era. The Demon Lord and the Goddess become historical figures, their stories occasionally told.

Abyssal Chronicles

Red Leaf Empire - Fortress City of Redfall.

As the largest city in the southern part of the Red Leaf Empire and the production center of magical items, this city, after being occupied by the Black Rose family, immediately established the army's headquarters here. Using it as the center, the entire city was transformed into the Black Rose family's base in the Red Leaf Empire.

After bringing the unconscious Yumo back to Redfall, Xiao immediately started another renovation.

That was to forcibly requisition the most prosperous city lord's mansion in Redfall and use it as a place for Yumo to recuperate her body and mind.

You ask what if the city lord opposes?

Chapter 821: After the war part 1