Kae has been taken away and Kawaki must face a dangerous assassin. Himawari acts as his partner and provides support during the battle. They try to corner the enemy with coordinated attacks, but the enemy proves to be powerful. Meanwhile, their classmates, who had entrusted Kawaki and Himawari to directly confront the assassin, take action in a desire to try to help. Will Kawaki be able to save his precious friends and accomplish his mission?

Even though they share the same body,
،مع أنّهما تتشاركان نفس الجسد
Obwohl sie denselben Körper teilen,
wusste Hana-sensei nichts davon!
Hanno lo stesso corpo,
Mesmo estando no mesmo corpo,
Пусть они делят одно тело…
 учительница ничего не знала!