For those unfamilliar with the Langrisser series; they're a strategy type of game in which your commanders (playable characters) and their hired troops battle it out against enemies with steel and magic. Only one installment of the series was ever officially (although poorly) translated. You may have played it on your Sega Genesis at some time under the english name "Warsong". This is a remake of that very game (the gameplay is pretty much identical to "Der Langrisser" for the Snes). This version is completely translated (fan translation by these guys here: http://cinnamonpirate.com/hobby/translation/lang1/).
The Langrisser series is one of, if not "The" best strategy rpg series i've ever played. If you like strategy rpg's you should definitely try it (fan translations of Langrisser 2 for the Sega Genesis and Der Langrisser for the Snes are complete in case you're hungry for more )
Also, please read the manual's troubleshooting section before asking me why you're getting cd-drive read errors