When I was in high school there was a foreign exchange student from Japan in my Japanese class. So, of course, I just had to go talk to her about Ayu because I never get the chance to talk with people in person about her (for obvious reasons). I started by asking her if she was a fan of Ayu and she had no idea who I was talking about! lol. I started listing songs and she didn't know any of them except dearest. So, little naive me was quickly taught that not every Japanese person is going to know who Ayumi Hamasaki is! It was surely a lesson