View source for Yakusoku da yo/Happy Happy (CD, POOP-40010)

'''約束だよ / ハッピー・ハッピー''' (''Yakusoku da yo / Happy Happy'', lit: '''''It's a Promise / Happy Happy''''', Catalog No: '''POOP-40010'''<ref group="cn">The O and 0 look exactly same on the font used. The Polydor label doesn't seem to have used numbers in the first 4 letters of similar CatNo's around the time period, though sometime later they used numbers there to represent pricing(?), citation needed.</ref>) is a [[Wikipedia:Mini CD|Mini CD]] that was released on '''25 May 1989'''.

== Credits ==

== Tracklist ==

=== Citation Needed ===
<references group="cn" />