The term tanabata was associated with the reunion of the star-crossed lovers. A tragic loves story of two people who fought against fate just to be together thought their relationship is doomed from the very start. It’s pretty interesting that the wickedness of the universe or of the stars can't allow such bright love to flourish. From this story, we can say that either Aya or Erika can be considered as the STAR (aka the hindrance) of that “relationship”.