To get the best ending, you must prepare to fight the final boss, Demon King Kayblis.
Creating a comprehensive walkthrough for Kichikuou Rance (often referred to as Rance 1 in the western community context, though technically the third game released) requires a structured approach. Note that if you are looking for the original 1989 PC-9801 game, the gameplay is very different (a dungeon crawler), but most modern players are looking for the 2023 HD Remake or the "Kichikuou" timeline.
Below is a content structure and guide for the Kichikuou Rance HD Remake (The Continent Erasure Strategy). rance 1 walkthrough
Gil is the first true challenge. He has two forms.
Phase 1 – Gil (Human-like):
Phase 2 – Gil (True Demon Form):
After the battle: You find Hikari, but she is catatonic. Gil had broken her mind. Rance... does what Rance does best (the infamous scene). This is the non-canonical "bad ending" if you stop here. To get the best ending, you must prepare
After the Castle Underground, the real detective work begins. You need clues about the kidnapped girl, Hikari.