Ep. 23: Mulian forces demand RahXephon surrender while Kunugi stays behind to activate Jupiter system device
Aired on August 14, 2002

23
The Mulian forces issue an ultimatum to hand over the RahXephon or face annihilation, but TERRA refuses. Kunugi returns as commander and Haruka regains her position. Masayoshi Kuki threatens the TERRA Organization to surrender the RahXephon within one day or face the approaching Dolem named Largo. Nirai-Kanai is evacuated onto the base, leaving Kunugi alone to operate the defense systems. It is revealed that Kuki was Kunugi's superior officer during the Mulian war. Ixtli pleads for Ayato to enter the tuning into her, warning that all humanity will be lost and forgotten otherwise. As Kunugi appears overpowered by Largo, he activates the Jupiter system device as a secret weapon to backfire at Kuki, destroying the entire island.
Episodes
- Ep. 19 · Ayato flees Tokyo Jupiter while facing trauma from Vibrato and Futagami's pursuit
- Ep. 20 · Ayato returns to TERRA under Isshiki while Mamoru reunites with Ayato and Megumi after escaping Tokyo.
- Ep. 21 · Isshiki's TERRA takeover strains relations as Mamoru uncovers Hiroko's past and Ayato's secrets.
- Ep. 22 · Ayato and Quon face Ixtli while Makoto is dismissed after the early operation.
- Ep. 23 · Mulian forces demand RahXephon surrender while Kunugi stays behind to activate Jupiter system device
- Ep. 24 · Ayato Chooses His Path Amidst the Battle Between TERRA and Mulian Forces
- Ep. 25 · Ayato and Quon reveal their connection as RahXephon halves amidst city destruction.
- Ep. 26 · The final confrontation between the True Xephons concludes with Ayato restoring the world to reunite with Haruka.