Usagi met Chibi chibi in episode 183.
You can find a link at Watch-series
Aural Vampire EP was created on 2008-10-28.
22 ep.
Unplugged - EP - was created on 2007-10-24.
Sea EP was created on 1999-05-24.
Planets - EP - was created on 2010-09-24.
Bridezilla - EP - was created on 2007-11-24.
Earthmover - EP - was created on 2007-07-24.
Exclusive - EP - was created on 2003-04-24.
Error - EP - was created on 2004-02-24.
Medea - EP - was created on 2007-11-24.