Tsubasa thinks that her pretty and popular twin sister, Arisa, has the perfect life. Everyone at school loves Arisa—unlike the hot-tempered Tsubasa, whose nickname is "The Demon Princess." But when Arisa attempts suicide, Tsubasa learns that her seemingly perfect sister has been keeping some dark secrets. Now Tsubasa is going undercover at school—disguised as Arisa—in search of the truth. But will Arisa's secrets shatter Tsubasa's life, too? IN THE SHADOW OF THE MOON Tsubasa hunt for The King thickens when Arisa's class goes to a planetarium to watch an eclipse and The King makes a decree that turns the chosen against each other. Later, suspicion mounts on Midori, who asks Tsubasa on a date! Can Tsubasa save the day from The King, and protect the stars in her sister's sky from ill fates? Includes special extras after the story!