Throughout the anime, especially in the first few episodes, Moriko Morioka makes reference to being a NEET on purpose. At the beginning of the anime, she walks home with some flowers. Later on in the anime, there are comments and innuendo suggesting she did not quit, but was fired. At least, she is embarrassed the same way someone who was fired would be.
Did she purposefully quit her job, or was she let go for some reason?