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Main Article: Star Army of Yamatai
The YSS Spark, YX-C5-0101 is a SSS Ge-E1-1a - Tenba-Class Transporter. She was built at the Amatsu-Daichi in orbit above Daichi in YE 34 for the Scientific Studies Service (SSS).
The YSS Spark serves as the primary vehicle for the Journeymen 3.