Isekai NTR Inn: My Lover and Little Sister Are Taken from Me Before I Know It v1.17 (Chinese Simplified, Korean, Japanese, English)

In an unfamiliar other world, their peaceful daily lives are quietly encroached upon by the sinister hands of local men. Hiroto, the protagonist, along with his girlfriend Miyuki and his sister Akari, are transported to another world after being enveloped in a mysterious light. The first place the three arrive is an "otherworld inn." In order to find a way back to their own world, the three help out at the inn and gather information, but one day, while in the forest with Clark, a mercenary who is staying there, they are attacked by monsters. This incident causes a rift to slowly begin to form in the bond between the three… Furthermore, a new man calling himself Dejarre appears at the inn, and two dark hands reach out to the beloved Miyuki and Akari… This game is a "real-time progression NTR simulation" in which the heroines live their own lives behind the scenes of the player's actions.​