As the Treasure Hunt Game enters its final stage, the Eighth Clan advances toward Shibuya Central Tower. According to plan, Hiiragi holds position in the tower itself and attacks, but is met with a tough battle against Sig, a high-ranking member of the Eighth Clan, who has a Sigil that allows him to control flames. Realizing that the key to victory is at Shibuya Station, Rein heads there immediately, managing to arrive ahead of the others. However, she finds someone unexpected waiting for her...