• Regular 通常盤 2006/12/06 ¥1050 / PKCP-5074
    1 Munasawagi Scarlet 胸さわぎスカーレット A-side
    2 Aitai Kedo・・・ 会いたいけど・・・ B-side
    3 Munasawagi Scarlet (Instrumental) 胸さわぎスカーレット (Instrumental)
  • Single V シングルV 2006/12/27 ¥1575 / PKCP-5058
    DVD Tracklist
    1 Waracchaou yo BOYFRIEND 笑っちゃおうよ BOYFRIEND Music Video
    2 Waracchaou yo BOYFRIEND (Dance Shot Ver.) 笑っちゃおうよ BOYFRIEND (Dance Shot Ver.) Music Video
    3 Making Eizou メイキング映像 Making of


7 idols participated in this single. They are listed below alongside their age at the time of release, starting from the oldest.