Natsumi Abe
"No. 5" is the last studio album to feature second generation member Kei Yasuda and first generation member Natsumi Abe as full members of the group. Yasuda graduated later in 2003, and Abe graduated in early 2004. It is also the first Morning Musume studio album to feature a former member as a returning guest artist, as Maki Goto guests on "Megami ~Mousse na Yasashisa~" and "Ganbacchae" (as well as appears on "Do It! Now", her last single as a member of the band).