[spoiler=Berio, heavy spoiler]I'll say her route (not her character) is very horrible.
Berio has split personality.
Berio said she noticed that she has that condition when she stayed in the church back at her own world. She said a lot of stuff was stolen in the church and people suspected her.
Black Papillon (her other personality) said the condition was because of her family bloodline since both her brother and her father is a criminal. She said it was because of her inner desire to commit crime so she did prank like that.
Then later, her brother revealed that they has incest relationship and that Berio love him.
Her brother said he murdered everyone in the church, thus, that is what triggered her split personality.
Six minutes later, before he died he said she was adopted so there's no incest actually.
Then, stuff happened and Berio's two personality merged.
But this "new" Berio has a totally different personality than the "old" Berio and Black Papillon. This new personality is both strange and weird. Five minutes later, the game ended.
So yeah, her route storyline is horrible imo.