She was so shy that she blushed even when kissing. She wasn't very proactive about sex either. But one day, she started to change rapidly. At first, I couldn't get in touch with her at all after a certain time. I was a little worried, but when we met, she was just like her usual self, so I gradually stopped worrying. But she was becoming more and more proactive about sex. Something was wrong... but by this time... she was already addicted to sex with the old store manager.