Kodansha Comics Edition Release Date: November 8, 2011
When Tsubasa hands over the letter to Arisa, Arisa tries to kill herself by jumping out of a window. Arisa survives but remains in a coma. The letter read, "Arisa is a traitor." After her sister's suicide attempt, Tsubasa is determined to unravel the mystery behind the letter and her sister's suicide attempt. Tsubasa continues to go to school as Arisa. Will she find out who sent the note and why it had such an effect on Arisa?