Senki Survival Saga - Isekai no Unmei wo Kaketa Mujintou Fujun Iseikouyuu

戦姫サバイバルサガ -異世界の運命をかけた無人島フジュン異性交遊- / Senki Survival Saga - Isekai no Unmei o Kaketa Mujintou Fujun Iseikouyuu / Warrior Princess Survival Saga: The Unsanctioned Intergender Relations on a Deserted Island, Battling for the Fate of Another World

Anastasia, an elf renowned as a once-in-a-millennium magical talent, faces the final battle of a three-way war in another world. In the midst of battle with her arch enemies, the demon race, Anastasia is enveloped in an intense light and, when she awakens, finds herself on an uninhabited island. As Anastasia strolls around the island, a mysterious human appears before her, but she can no longer use magic…!?