ビーサンはなぜなくくなるのか？(Biisan wa Naze Nakunaru no ka?) - off vocal
HKT48 * Track #3 On ビーサンはなぜなくくなるのか？(Biisan wa Naze Nakunaru no ka?) - Type A
Download "ビーサンはなぜなくくなるのか？(Biisan wa Naze Nakunaru no ka?) - off vocal"
Album ビーサンはなぜなくくなるのか？(Biisan wa Naze Nakunaru no ka?) - Type A
ビーサンはなぜなくくなるのか？(Biisan wa Naze Nakunaru no ka?) - off vocal by HKT48
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HKT48ビーサンはなぜなくくなるのか？(Biisan wa Naze Nakunaru no ka?) - off vocal Lyrics
Lyrics for this song have yet to be released