Brave Soul, a hentai role-playing game developed by Crowd. English localization published by JAST USA. Originally released in Japan on April 10, 2003. Download on Nutaku.net for $15.00. For PC Windows. Full voice acting.
You were kicked out from your home and disowned by your father. You decide to follow in his footsteps and become an adventurer! Because nothing inspires a boy to follow his fathers ideals like total abandonment! Many exciting adventures and sexy high-standards women await you on this journey!
You join the Hunters Guild and begin searching for treasure. Along the way you meet a mysterious girl named Alicia who appears to be the spitting image of the Moon Goddess.
Source: N4G PC [NSFW] Hentai Game Review: Brave Soul – Hentai Reviews