Azel knew a lot of things about the heroines, and that was exactly why he wanted to save them in the first place.
He knew their habits, their talents, their weaknesses, and even their tragic deaths.
With that knowledge, it wasn't hard to approach them, start conversations, or find ways to make them open up.
It wasn't easy knowing everything about them but that was just a small price to pay for meeting them in reality and being able to be a part of the plot, as well as disrespecting or overdoing Reinhardt at every point.
But Flare was different.
Out of all the heroines, she was the one he knew the least about.
Beyond her storyline and the only reason he even knew that was because she died the very day after opening up to Reinhardt, there wasn't much about it.
There was still a whole lot more he had yet to know about her, apart from the fact that her siblings were total assholes.
The world had been so cruel to her.