What Wonderful Days!!

What Wonderful Days!! is the ending theme of Free!-Take Your Marks-. It is performed by the seiyū of eight main characters along with four supporting characters. The single was released on November 8, 2017.

Characters

 * Haruka Nanase (CV. Nobunaga Shimazaki )
 * Makoto Tachibana (CV. Tatsuhisa Suzuki )
 * Rin Matsuoka (CV. Mamoru Miyano )
 * Nagisa Hazuki (CV. Tsubasa Yonaga )
 * Rei Ryugazaki (CV. Daisuke Hirakawa )
 * Sosuke Yamazaki (CV. Hosoya Yoshimasa )
 * Aiichiro Nitori (CV. Kouki Miyata )
 * Momotaro Mikoshiba (CV. Kenichi Suzumura )
 * <font color=>Seijuro Mikoshiba (CV. <font color=>Kenjiro Tsuda )
 * <font color=>Gou Matsuoka (CV. <font color=>Akeno Watanabe )
 * <font color=>Miho Amakata (CV. <font color=>Satsuki Yukino )
 * <font color=>Goro Sasabe (CV. <font color=>Hiroshi Yanaka )

Lyrics
What Wonderful Days!! (TV Version 1)=

What Wonderful Days!! (TV Version 2)=

What Wonderful Days!! (TV Version 3)=

What Wonderful Days!! (Full Version)=