I Do是朴振荣为配合 Rain 在2004年主演的电视剧《浪漫满屋》中李英宰的形象而特别制作。这首歌是在拍 FH 的时候,雨要求 JYP帮他写的。 also the song "I do" -is not from the "Its raining" album. It was Bi who asked JYP to specially write for him and his "Its raining" album was ready long ago and becos got to wait for "I do", it cause some delay in the release of 'Its raining" album. "I do" this song also called "song of ying jae" (Bi's name in FH)