Versi yang bisa dicetak tidak lagi didukung dan mungkin memiliki kesalahan tampilan. Tolong perbarui markah penjelajah Anda dan gunakan fungsi cetak penjelajah yang baku.
^Note a: The sales figure of 41,500 copies is taken from accumulating the sales of the single during its first four charting weeks on the Oricon weekly chart (33,418, 3,106, 3,060, 1,954).[4][5][6][7]
^Note b: The sales figure of 44,500 copies is taken from accumulating the sales of the single during its first three charting weeks on the Oricon weekly chart (39,120, 3,377, 2,055).[8][9][10]
^Note c: The sales figure of 30,500 copies is taken from accumulating the sales of the single during its first two charting weeks on the Oricon weekly chart (28,219, 2,315).[11][12]
^Note d: The sales figure of 44,603 copies is taken from accumulating the sales of the single during its first two charting weeks on the Oricon weekly chart (41,726, 2,877).[13][14]
^"FTISLAND 「20 [twenty] （初回限定盤））」" (dalam bahasa Japanese). Warner Music Japan. Diarsipkan dari versi asli tanggal 2017-11-12. Diakses tanggal May 23, 2012.Pemeliharaan CS1: Bahasa yang tidak diketahui (link)
^"FTISLAND 「20 [twenty] （ローソン限定盤））」" (dalam bahasa Japanese). Warner Music Japan. Diarsipkan dari versi asli tanggal 2012-05-04. Diakses tanggal May 23, 2012.Pemeliharaan CS1: Bahasa yang tidak diketahui (link)
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