Which is which? (STUDIO)

Which is which? (STUDIO) a song by STU48 on Soniditos

大好きな人 by STU48 ,
海の色を知っているか? (勝手に! 四国観光大使) by STU48 ,
Which is which? (STUDIO) by STU48 ,
大好きな人 off vocal ver. by STU48 ,
海の色を知っているか? (勝手に! 四国観光大使) off vocal ver. by STU48 ,
Which is which? (STUDIO) off vocal ver. by STU48 ,