Aya Hirano wanted to be an idol. Then, as she started to get some popularity, she started to learn about the disgusting fat otaku idol worship culture first hand (she was very innocently oblivious to what actually goes on, very ironically). She then tried to put up with it for a while, as her worshiping fanbase (and her popularity) grew, culminating in her having a pissy fit alienating 90% of her fan base (90% by number of yen spent on her idol crap) in a very rude twitter calling the disgusting fat otaku what they are and then offering sex to every member of the band she was in at the time. Only the basist refused the offer, on account to him being already married.
Sadly, this ruined her VA career as well, as those disgusting, fat otaku fanbase and people who buy anime BD/DVDs fanbase have a 70%+ crossover.
The next airing season, she had 0 roles offered to her, and it took a while before the anime studios opened up to letting her use her vocal talent again (lots of 2ch boycotting of anything related to her).
It's taken a while, and she has had a few small parts, her being included in Gintama was probably the biggest role given to her at the time, but I'm happy to see her get a main role again.