ミラージュ２ トリーＸニートＸローンの大冒険

The sequel to Mirage is set in the same world and features some recurrent characters, although the protagonist and the story are different. The main character is a young monster hunter named Etranze. He needs to slay a certain amount of monsters to reach a higher level, but meanwhile is struggling to be accepted among other heroes. This changes when he befriends Torry, Neat, and Roan, the three lovely ladies who work (of all places) in the local church. Soon Etranze is summoned by queen Irene, who sends him on a quest to find a magical artifact that will save her kingdom from great peril.

[From MobyGames]