This Star
Summary
Fei Yu Bei Tang, who was the heir of the Yanye royal family, was born and lost in the civil strife. Bei Tang had many near-death experiences and separations from loved ones, and after many times became numb to saying farewell. When Bei Tang felt as if all hope was dashed to pieces, the enemy country refugees adopted Bei Tang. The last descendants of the royal families reformed themselves, and intertwined with one another in the net woven by the bloody feud between the two countries and the redemption of familial love. To protect the beloved one, Bei Tang regained hope and embarked the way to redemption.
The Star manhua / This Planet ; 此星 ; Ci Xing ; This Star
... and the second season of the Anime did a better job of pacing than I thought they would. I think they moved the Elf village arc from before hostilities with the Principality began to the inter-war period, aka the start of the second season, and used that to pad it out. Good call if that's what they did. In any event. Good season.