GURDIAN.Saiki remembers his training with Aoki, telling to Hinoto that despite not being a Dragon of Heaven, he is happy that he was destined to protect her. Meanwhile, Nataku states he wants to stay with Fūma as he resembles his father, and Fūma decides to grant his wish. Kamui then visits Hinoto, requesting her to teach him create a barrier to fight without wounding others. As Hinoto is also unable to do that, Saiki tells him Aoki once said that he created barriers when wishing to protect others. As Kamui thanks Saiki, Fūma and Nataku attack the Tōjō Pharmaceuticals's building. As Nataku hesitates when being about to kill his creator, Kamui confronts Fūma. Unable to create a barrier, Kamui is easily defeated, and Saiki goes to his aid. Fūma tells Saiki he will grant his wish of dying while defending Hinoto, and kills him much to Hinoto's shock. An angered Kamui attacks Fūma, who teases him for not trying to kill him. As Fūma is about finish Kamui, Subaru's barrier appears. Later, Subaru is wounded while Aoki sadly holds Saiki's corpse.