Vol.4 Haruka Nanase & Rin Matsuoka

Vol.4 Haruka Nanase & Rin Matsuoka (Vol.4 七瀬 遙 & 松岡 凛) is the fourth character song duet series CD of the Free! anime. It is performed by Haruka Nanase and Rin Matsuoka's  seiyūs, Nobunaga Shimazaki  and Mamoru Miyano. The CD was released on March 19, 2014.

Tracklist

 * 1) REAL WAVE
 * 2) きっと忘れない
 * 3) Original Drama～Haruka & Rin～
 * 4) REAL WAVE (Off Vocal)
 * 5) きっと忘れない (Off Vocal)