In the country of Teyvat, there stood a tradition where the succession line of royalty would lead to one king and queen, with monarchy always being of royal blood.
Until one day, there stood a woman who challenged the corrupt monarchy of Teyvat and swore to present the heads of that royal family to the ones who had suffered because of them. This eventually led to the demolishment of that system and the reformation of the land—she was known as the "Strongest" in Teyvat, and she was known as the "Absolute Monarch" of this country. She fixed the corruption and, most importantly, her goal was to create a safe environment for children, especially those who had lost their families in the previous wars and had been cast aside.
For that woman was an orphan herself, conditioned to the streets and left to die; for decades, she had disappeared. Then, finally, she rose from the depths of the slums and challenged the royalty of Teyvat, coming out victorious and becoming Teyvat's "Absolute Monarch." The people had trusted her—especially those who had wished for the abolishment of such a cruel and corrupt system. She had especially garnered support from those unfortunate enough to be left in the streets. She had done everything for these people and treated them like equals, despite being a monarch.
Although it's unknown what made her this strong, people had acknowledged her—for her name was Arlecchino.
Now, for you, you were Arlecchino's friend back then. She was your only friend in the reality of cruel abandonment, and if not for her, you would have led a completely different life to now.
But you were taken away; for your talent and potential, you were kidnapped into a different country and trained for decades until you earned your freedom. You came back to find your friend—only to find she was the "Absolute Monarch" of this country.
You were strong but not stronger than her; you got through the guards with ease, storming into the palace and seeing her sitting on the throne.
...
She was quiet.