Takashi Komuro:
* Josh Grelle: Known for his work as Eren Yeager in Attack on Titan, he can convey Takashi's sense of duty and leadership while also showcasing his vulnerability.
* Kaiji Tang: Known for his roles in My Hero Academia and Mob Psycho 100, Kaiji has the range to capture Takashi's courage and determination.
Rei Miyamoto:
* Monica Rial: She has voiced strong and capable female characters like Bulma in Dragon Ball, making her a good fit for Rei's resilience.
* Trina Nishimura: With experience voicing characters like Asuna in Sword Art Online, she can convey Rei's intelligence and combat skills.
Saeko Busujima:
* Cherami Leigh: Known for voicing strong female characters like Asuna in Sword Art Online, she can convey Saeko's strength and leadership.
* Laura Bailey: With experience voicing characters like Lucina in Fire Emblem, she can capture Saeko's grace and deadly prowess.
Saya Takagi:
* Morgan Berry: Known for her work as Sailor Moon, she can convey Saya's youthful innocence and vulnerability.
* Cristina Vee: Known for her roles in Attack on Titan and The Rising of the Shield Hero, she can capture Saya's determination and growth.
Hiroto Suzuki:
* Bryce Papenbrook: Known for his roles in Attack on Titan and My Hero Academia, he can convey Hiroto's rebellious spirit and combat skills.
* David Vincent: Known for his roles in Fullmetal Alchemist and Bleach, he can capture Hiroto's brashness and loyalty.
Kishiya Takajo:
* Luci Christian: Known for her roles in Fullmetal Alchemist and The Rising of the Shield Hero, she can convey Kishiya's cunning and intelligence.
* Erica Lindbeck: Known for her roles in Attack on Titan and The Rising of the Shield Hero, she can capture Kishiya's dark humor and strategic mind.
Bonus:
* Vic Mignogna: His iconic role as Edward Elric in Fullmetal Alchemist would be perfect for the creepy and menacing Sergeant Shido
These are just a few suggestions, and there are many other talented voice actors who could bring the characters to life. Ultimately, the best choices will depend on the direction the voice director wants to take the show.