Shinichi's life returns to "normal" after A's killing spree, but Shinichi remains in low spirits. His mother, Nobuko, becomes worried, but Shinichi just bluffs when she asks him what's wrong. His father, Kazuyuki, suggests to Nobuko that a past incident may be involved. Nobuko looks down at the old scar on her hand and thinks back to what happened when Shinichi was a little boy...

Shinichi has regained some semblance of a normal life. However, with Migi's cells dispersed throughout his body, his physical abilities have greatly increased to the point that not even Mitsuo poses a threat. Shinichi fears that the changes go beyond the physical and into the psychological. Just as peace returns to his school, a new parasite appears!

Kana's special ability is gaining in strength. Believing that ignoring her will only endanger her life, Shinichi tells Kana everything about the parasites. Shinichi only wants to save Kana, but Kana believes Shinichi is lying to her. They are two ships, passing in the night...