I first heard of Ayumi back in Sept/Oct 2004 (through
~ayu-cake~), but it wasn't until the
glitter/
fated PVs came out that someone else introduced me properly to her music. I've been listening to her music since then.
However, it wasn't until some time shortly after
L came out that I really started to consider myself a fan of her. I listened to her music regularly and I even had a poster of her on my wall, but I felt more like a casual listener of her music than a fan. But after I listened to the tracks on
L that was when I became more interested in her as a person and purchasing albums I hadn't heard, watching her PVs/concerts, etc.