"Long Night" (Japanese: 眠れない夜, Hepburn: nemurenai yoru, lit. "sleepless night") is Kim Hyung-jun's first Japanese single, which was released on July 27, 2011 under Avex Entertainment.
"Long Night" (bahasa Jepang: 眠れない夜, Hepburn: nemurenai yoru, lit. "sleepless night") adalah singel berbahasa Jepang pertama Kim Hyung-jun, yang dirilis pada tanggal 27 Juli 2011 di bawah Avex Entertainment.