Bianca started her challenge in the mirror realm as she watched and oversaw the lives of ten thousand people.
Other people's lives were mediocre and they weren't that dramatic. But some of them had a dramatic plot twist that highlighted the inequality of the world they were in.
Such as a commoner who was right yet was deemed as wrong just because a noble said so.
The same went for someone poor who was given life imprisonment for a crime he didn't commit just because someone from the government made him a scapegoat.
There were also those students who were bullied in class yet despite being the victim, the teacher would scold them for being bullied rather than scolding the bully just because the bully was the son of the principal.
There was so much more and Bianca realized just how unequal everyone was in the world. There was no true equality.
If there was, it must be in a world created as a utopia.