NIS America have released a story trailer for Langrisser I & II, detailing the story of the first game.
You can find the full run-down on that story below:
Long ago, there was a terrible war over a legendary sword said to grant its wielder unlimited power. The blood of those who vowed to protect it and those who sought its power for themselves permeated the battlefields of El Sallia. That sword is known as Langrisser. Of those who swore to protect it, the royal family of Baldea has safeguarded it from the world for many generations. Thanks to Baldea, tales of Langrisser soon faded from memory.
However, Baldea’s sworn duty would be called to action once again. Motivated by power and the conviction to rule the world, Kaiser Digos and the Dalsis Empire he commanded invade Baldea, seeking the enticing power of Langrisser. Ledin, the prince of Baldea, narrowly escapes the invasion, and devises a way to avenge his father, who had been killed by Kaiser Digos.
Now, Ledin must reclaim Langrisser, which his ancestors fought so valiantly to protect—thus beginning his journey that will test his loyalty to the Light.
Langrisser I & II will launch March 10th in North America, March 13th in Europe, and March 20th in Australia and New Zealand; for Windows PC (via Steam), Nintendo Switch, and PlayStation 4.