05

After speaking to Franz, leave Hykros and return to the Astra Omnium Tower. Make your way to the Mega Arena, located southeast of the tower, to compete for the Astrum reward.

Speak to Jerry, the apprentice, outside the arena. He will direct you to Digsy (overseen by King) to sign up. Speak to King twice to register for the first battle.

First Match: Katie
Katie fights with two swords. Utilize dodge moves and discharge attacks. If you struggle, equip a bow and fight from a distance.

After defeating Katie, speak to King again to proceed.

Second Match: Max and Atom
Before the fight, speak to Max on the lower level. In the arena, you will face Max and his AI companion, Atom, who pilots an Iron-man style suit. Max and Atom are stronger than Katie; their attacks are damaging but telegraphed and easy to dodge. Time dodges to trigger Phantasia for discharge attacks. Atom's laser beam attacks from his drill arm are also avoidable, especially in close combat. At around 1/3rd health, Atom performs a slow, dodgeable jump slam attack.

Upon defeating Max and Atom, claim the bonus reward: the Nightingale’s Feather bow, and unlock the Bai Ling Simulacrum.

Speak to King again to begin the final match: the Brutal Brothers.

Third Match: The Brutal Brothers (Gordon and Buffy)
To make the fight easier, you can manipulate the brothers into fighting each other. Speak to Gordon across from the arena, then speak to his brother Buffy on an elevated area southwest of Gordon. Choose the option "Team up with Buffy." At the start of the battle, Buffy will fight alongside you against Gordon.

If you teamed up with Buffy, fighting Gordon will be easy. Buffy will engage in close combat while you use your bow from a distance.

After defeating Gordon, the more challenging fight is against Buffy, who may be weakened.

Buffy's attacks include a slow, dodgeable slam attack (trigger Phantasia) and a missile launch attack where you must dodge red circles on the ground. His primary attacks involve slow punches and slaps with his large arms, which can be dodged to trigger Phantasia.

Once you defeat Buffy, speak to King again. He will congratulate you and reward you with the Astrum.

Speak to M-ia nearby to discuss the fight, then return to Astra Omnium Tower to speak with Franz.

After speaking to Franz, you will be able to shut down the Omnium Tower, concluding the chapter and unlocking Chapter 2: Failed Remodeling.