• Card Set: R Heart DE Set 1 (R ハートDEカード 第1弾)
• Printed by: MARUSHŌ (丸昌)
• Year: July 1993
• Season: R (2nd)
• Size: 4.7cm×3.2cm
• Special Cards: 36 [ Prism Cards: 1p-36p ]
• Regular Cards: 36 [ 1-36 ]
• Total: 72

Print runs were very limited of these heart shaped cards. The brand new pull pack contained 34 cards (3 random prism cards (including one prism on the cover) and 31 random regular cards) or 12 cards (10 regulars + 2 prisms). The card is about the size of a regular PP or Carddass card. Each regular card has a prism version and that makes this card set incredibly hard to complete.

Marushō released three different prism card editions. The prism effects are as follows.
- tiny dot prism effect that at a distance gives a larger box pattern to them that seems to move as you move the card
- falling snow effect (strickly up and down on cards, which is very sparkly)
- box prism (standard to most Japanese sets)

This set has 6 different styles of back artwork.
- pink with white dots, pink heart at bottom
- blue with white squares, star on bottom
- light pink with small and large circles, bow on bottom
- half blue w/white asterics / half pink w/ white asterics, diamond on the bottom
- blue with white shining star and a diamond gem at bottom
- pink with white scrambled letters different sizes, cresent moon on the bottom

This card set is dedicated to the R season, but contains a lot of shots from the 1st season.