Mayu Otsuka works at the 4th Foreign Affairs Department in the Japanese National Police Agency as a liaison officer with the National Astronomical Observatory of Japan. She wrote a story about a masked man that supposedly seemed to be a dream, but she isn't sure. Hei and his comrades got themselves a new task and are looking for a numeric password with a sample. A contractor took it from the Gate and buried it under a blossom tree. As events unfold, Mayu seems to fall in love with Hei, while Saitou struggles to confess his feelings for Kirihara.

Sometime after the Tokyo Explosion incident, Hei had fought and defeated some Syndicate Contractors and had then fled with Yin to Okinawa. The two posed as newlyweds on their honeymoon, and Hei had tried to find a way out of the country. What began to bother him though was how Yin started acting on her own. The two ended up not leaving by boat because of the ferry ticket lady’s warning about Yin getting seasick, and this led to Hei running into a woman at the hotel who looked exactly like Amber. Yin noticed this as well, and after seeing Hei talking with the woman and later feeling distant from him, Yin had made use of her observation spirit that night. Although Hei had woken up and stopped her from doing anything drastic, Yin saw enough to be able to say that the woman was not Amber but was indeed a Contractor. Yin had tried to suggest that he get out of there, however Hei had just hugged her and vowed not to leave her by herself...

Picking up from last time,the men barging in to help Hei turned out to be Amber’s former Evening Primrose members led by Amagiri. Upon talking to Hei about how books from over fifty years ago predicted the appearance of a girl with the power to change the world and wondering if Amber foresaw all this, Amagiri asks Hei what exactly does he think of Yin. Hei is unable to give an answer...

Claude gives Yin an unknown substance which should make her unstable to fasten her awakening. He calls every secret organization in the world in order to set them up against each other. The Chinese Secret Organization is first, whom Claude sells Yin to. He throws the money out of the window. In the next scene, Hei is seen with the real contractor body of the dog who helps him now because of Claude's irrational actions. They are able to enter into the building, killing contractors in the process. Outside the building, several organizations are fighting each other just as Claude had intended...