Mukuchi na Lion
- Mukuchi na Lion (無口なライオン; Silent Lion)
- Akimoto Yasushi
- Shusui, Heroism
- Other Information
- Arrangement: Shusui, Heroism
- (Center: Nishino Nanase)
- Nogizaka46 1st gen: Inoue Sayuri, Saito Yuuri, Sakurai Reika, Nishino Nanase, Hoshino Minami, Wakatsuki Yumi
- Nogizaka46 1st gen / AKB48 Team B: Ikoma Rina
- Nogizaka46 2nd gen: Hori Miona
There are currently two recorded versions of "Mukuchi na Lion" found in Nogizaka46's discography. These versions are:
- Mukuchi na Lion (Original)
- Found on the Type-B edition of the "Natsu no Free&Easy" single as track #3.
- Mukuchi na Lion ~off vocal ver.~
- Found on the Type-B edition of the "Natsu no Free&Easy" single as track #6. This is the standard version without the main vocals.