Kalin no Tsurugi

 is an action-RPG developed by XTALSOFT and published by DOG for the Family Computer Disk System in Japan in 1987.
The story.
"Kalin no Tsurugi" takes place in the peaceful Altenia Kingdom. Recently, however, monsters have been appearing. To help combat these monsters, the King calls forth his best knight: you. Your purpose is twofold: you must find the mage Gladrif and defeat the monsters terrorizing the townspeople.