Sakura Fantasy, a yuri hentai visual novel developed by Winged Cloud. Released May 29, 2015. Available for PC Windows and Linux. Download on Nutakus digital store for $10.00. No voice acting.
Raelin is a novice knight in training. Shes friends with a blonde beauty with curly hair named Gwynne. Their instructor is Keira, a veteran knight thats training them both into soldiers of the empire. The wilderness surrounding the castle is infested with monsters that attack anybody that dares venture out. Raelin works hard and gets promoted into a guardsman at the castle. There, she meets the immortal empress of the kingdom.
Source: N4G PC [NSFW] Hentai Game Review: Sakura Fantasy – Hentai Reviews