So I was looking into the doll Licca's instagram account and I found out they did a homage to Ayu! In cellebration of their 50th anniversary, the account is doing a especial with facts from the last 50 years. And 2001 is about Ayu! For those who don't know Licca, she's the most important doll in Japan (just like Barbie is for the rest of the world).
@bonjour_licca #50yearsTimeTravel in #2001 : The girls were influenced by J-POP divas such as Ayumi Hamasaki !