Ep. 24: Nerval mengungkap kebenaran rudal sementara Leopard menyerah pada Dark Leopard dan menyatakan perang terhadap umat manusia.

Xanthippe reveals that Nerval was the one who actually destroyed the missile that everyone thought Imo-chan had rammed, and that he transported Imo-chan to him. Akiha is determined to rescue Imo-chan, but Kazane stops her. Leopard exults over his competition, and begins a conversion with Dark Leopard, his alter ego. Dark Leopard questions why Leopard serves humans, and encourages him to rule humanity, reminding him of how he once ruled with fear and unbelievable power. Imo-chan, having awakened, explains to Nerval why she tried Akiha and how she loves Akiha. Nerval, in turn, explains to Nami and Imo-chan how he made a mistake 50 years ago, and is now trying to learn more about humans. After Nerval and Aleida confer, Nerval tries to get Benkei to help him again, but Tsutsuji refuses, causing Nerval to realize that he can never completely understand humans. Nami encourages him to become a devil emperor, but Nerval refuses and says that he only wishes for rational agreement between humans and colonies. Meanwhile, Akiha and friends are going to rescue Nami, disobeying Kazane's orders, when Benkei appears to attack Leopard. However, Leopard has been taken over by Dark Leopard, and retaliates viciously. Jumping to Kirkwood, Leopard declares himself the absolute ruler of humanity, and begins destroying everything nearby. As Akiha and her friends try to reach Leopard's core, Nerval arrives to help stop Leopard. (Source: Wikipedia)
Episode
- Ep. 20 · Akiha Bangun di Dalam Kotak Saat Masa Hidup Honoka Berakhir dan Nami Ditikam
- Ep. 21 · Leopard mencari Pedang sementara Akiha melarikan diri dari kotaknya sebelum UURE menyerang Kirkwood.
- Ep. 22 · Akiha dan Itsuki melarikan diri dari Nervalists sementara Honoka menculik Fon dan kelompok tersebut menyelamatkan manusia kotak yang trauma dari pabrik pembuangan.
- Ep. 23 · Leopard menyelesaikan pertarungan dengan pedang sementara Akiha menghadapi duka dan musuh-musuhnya.
- Ep. 24 · Nerval mengungkap kebenaran rudal sementara Leopard menyerah pada Dark Leopard dan menyatakan perang terhadap umat manusia.
- Ep. 25 · Nerval dan Nami bertabrakan saat Akiha menemukan takdirnya untuk mengakhiri perang koloni otak.
- Ep. 26 · Kazane mengoordinasikan serangan ke Leopard sementara Kagura menghadapi Nami dan Xanthippe tiba untuk membantu.