The first mistake/Prologue

Underswap never existed, instead Blue/Midnight was the triplet to Dream and Nightmare and the guardian of balance. The guardian of the balance must protect the guardians from everything especially each other and stop them from becoming corrupted or betraying their ideals. If one were to betray the other then the guardian of balance must protect the betrayed guardian. There is one guardian of balance for all pairs of opposing guardians . Will Moonlight and Nightmare beat Dream and Ink and restore balance? Will Blue forgive Dream and make a truce? How will the bad Sanses react to meeting him? Find out by reading!

(The Nightberry is platonic. If you don't like it don't read it.)