This is the third game in a long running series (still going in 2016) from Nihon Falcom, developer of several famous RPG series. It's a very well drawn and fluid RPG, at least on the overworld (Although once you realize your character's eyes are 5's, you can't unsee it.) with a relatively straight-forward control scheme: arrow keys move you, space selects, escape cancels.This game would only see an English port in 2006 as Legend of Heroes II: Prophecy of the Moonlight Witch.
However, other than sharing plots and characters, they're not really the same game. In fact, the Windows port of this game is quite different as well... in the PC-98 version, combat is almost entirely automatic. You can select general attack routines, but the control is pretty limited. The Windows version augments this a bit with some manual control, and the PSP Portable version apparently realizes the whole auto-combat system was a bad idea and goes with a more traditional turn-based approach.