Koiing

恋ING (Romaji: KoiING) ialah lagu kedua didalam single kedua puluh Morning Musume, Go Girl ~Koi no Victory~.

Penerbit 

Lirik: Tsunku
Komposer: Tsunku
Susunan: Suzuki "Daichi" Hideyuki

Ahli Didalam Single Ini 

Gen. 1: Iida Kaori, Abe Natsumi
Gen. 2: Yaguchi Mari
Gen. 4: Ishikawa Rika, Yoshizawa Hitomi, Ai Kago, Nozomi Tsuji
Gen. 5: Takahashi Ai, Konno Asami, Ogawa Makoto, Niigaki Risa
Gen. 6: Fujimoto Miki, Kamei Eri, Michishige Sayumi, Tanaka Reina

Persembahan Konsert 

 Morning Musume Concert Tour 2004 "The Best of Japan Natsu ~ Aki '04"
 Hello Pro Party! 2006 ~Goto Maki Captain Kouen~ (Oleh Goto Maki, Ishikawa Rika, Nozomi Tsuji)
 Morning Musume Concert Tour 2006 Aki ~Odore! Morning Curry~

Pantauan Luar 

 projecthello.com: KoiING lyrics

Lagu Hello! Project
Lagu Morning Musume