Ep. 1: SDF Sirius Platoon Investigates Train Distress Calls on Unusual Planet

The SDF Sirius Platoon completes a mission to rescue hostages and subsequently receives distress signals from trains located near route 309. Following these communications, the unit is dispatched to investigate the underlying causes of these incidents. Their investigation leads them to an unusual planet where they must determine the source of the trouble affecting the railway infrastructure. This deployment marks a shift from their previous rescue operations to a broader exploration of the anomalies occurring in this specific region.

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