Idol-sama no Yoru no Okao

From Shoujo Manga Maniac: Aya is totally in love with Zero, the sexiest idol in all Japan, and wants to have her first time with him! She tries to get close to him by going to his school! Aya meets him and confess to him, but Zero promise her to be her boyfriend at one condition: being his puppet and do whatever he asks her to do! Aya agrees to it but is he really the guy Aya expects him to be?