Forced to Sell Myself to the Female Lead After Killing the Male Lead

I am not that good with synopsis, So please read the first chapter instead.
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In the northern part of a continent, a long-standing battle between various races and the demon race has finally reached its conclusion. The Demon Lord, Apophis, a figure with black hair, red eyes, and two horns, rules from her obsidian palace, having repeatedly defeated the Goddess, the strongest being in the world. However, Apophis refrains from killing the Goddess, knowing she will only be reborn to lead another attack.

As the Goddess kneels before Apophis, badly injured and helpless, the sounds of explosions echo outside, signaling the imminent victory of the Alliance. Despite her immense power, Apophis acknowledges the demon race's overall weakness compared to humans and the Alliance. The development of the Fighting Spirit technique has allowed ordinary humans to fight individual demons, leading to the demon army's defeat.

Apophis, aware of the Alliance's intent to enslave the demon race, 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. Apophis vows to resist and be reborn to save her people.

Meanwhile, the Goddess reflects on Apophis's past treatment of her and acknowledges her respect for the Demon Lord's dedication to her people. As Apophis prepares to cast the spell, the Goddess asks if she can abandon her plan and live freely. Apophis, however, feels duty-bound to restore the demon race's glory and protect her people.

The Goddess, understanding Apophis's resolve, readies her sword, intending to clash with Apophis'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.
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The first R18 will be in Chapter 600+. This will be a slow romance.
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All character's pictures are in Chapter 01
100 Golden tkt = 1 bonus chapters:
200 Golden tkt = 3 bonus chapters:
300 Golden tkt = 5 bonus chapters :
400 Golden tkt = 7 bonus chapters :
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Golden tkt bonus will be released at the end of the month.
This story is a merged plot between Overlord and Eminence in Shadow, give it a try and if you like it add it to lib,
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