This isn't a side story. It's the missing piece that makes Chirico's entire trajectory cohere, the moment you understand why he was already broken before the series even started. The Red Shoulders aren't romanticized; they're a machine for grinding soldiers into assets, and watching Chirico realize there's no escape from that system hits different when you've already seen where he ends up. You need to have lived with the original series to feel the weight of this, and that's exactly the point.
Chirico Cuvie's past as an elite Red Shoulder commando comes crashing into his present when he encounters members of his former unit. Caught between loyalties to old comrades and the weight of secrets he's carried, Chirico must confront what really happened during his time with the military's most feared soldiers. The Red Shoulders operated in shadow, taking on missions too brutal for standard forces, and the bonds forged in that darkness don't break easily. When former teammates surface with their own agendas, Chirico realizes that his escape from that life may have been more complicated than he thought. Gritty and tense, this story strips away the isolation of Chirico's usual journey to show the human cost of his military training. The mecha combat feels personal here, driven by genuine history between fighters rather than abstract conflict. What emerges is a portrait of a soldier haunted by the men he once called brothers, forced to choose between the soldier he was and the person he's trying to become.