Veras Region Tour Diary, a hentai RPG developed by circle Coolsister. Released January 23, 2016. Download on DLsite for $12.00. For PC Windows. No voice acting. Free demo available.
Vera is finally ready to begin her life as an adventurer! Leaving home for the first time ever, she sets out on a grand adventure to deliver an important letter and explore a world of full of men!
Source: N4G PC [NSFW] Hentai RPG Review: Vera's Region Tour Diary