Romance! A crazy, overprotective brother! And...spies?! Taiyo Asano has been on his own ever since his parents died. The only one who seems to care for him is his childhood friend and classmate, Mutsumi Yozakura. But Mutsumi has a secret--she is the head of a family of spies! The battle between Asa and the Yozakura family heats up! Kengo faces off against his old teacher Hulang. Does the secret to defeating her lie in the depths of her tragic past? Meanwhile, Kazu and Ryu challenge Shinzo. What is Ryu hoping to accomplish in siding with the enemy? It's one all-out battle after another!