Riddle of the Day

"近づけないよ 君の理想に すぐには 変われない......"

PS: what's this (may need to use Jap encoding to view)? Clue - lyrics of a song (actually the next line is the crux), which happens to be the theme song of a jap drama starring Takuya Kimura and Matsu Takako... Come on its not that difficult la...