Rose is kidnapped! The youth known as Onyx uses the tremendous power of the black dragon to subdue her. Onyx, who refers to Rose as "princess", seeks to make her his bride! Ryuji faces his emotional scars, unleashes the powers of a slash breath short sword, an S Class Lost Precious left to him by his parents, and goes after Onyx to save Rose. However, an insurmountable wall exists between humans and dragons. Emotions clash as the battle begins! Rose is kidnapped! Onyx, the youth in black, uses the tremendous power of the black dragon to subdue her. Ryuji faces his emotional scars and decides to fight. Emotions clash as the battle begins!

Rose wakes up with no memories about her life with Ryuji and her friends. Not willing to take any chances, Onyx decides to leave Japan with her as soon as possible. Meanwhile, thanks to Maruga's counseling, Ryuji finally comes to terms with his feelings for Rose and together with all his friends, he sets to Haneda Airport to rescue her.