Valkyrie Svia

Valkyrie Svia is a Japanese adult visual novel with a focus on sexual degradation, taking place in a setting inspired by Norse mythology. The player is Loki, an evil trickster god who joins forces with the brutish jotnar race and the armies of Hel to invade Asgard, the world where the benevolent gods reside. Just when it seems like Loki's victory is assured, Odin, the chief of the gods, seals the river that feeds Yggdrasil, the tree which supports the world, threatening mutually assured destruction if Loki does not withdraw. While researching ways to remove the seal on the river, Loki discovers the existence of two keys which can break the seal, each of which are located inside the virgin wombs of two of Asgard's finest valkyries named Svia and Sigurd. A wicked thought crosses Loki's mind when he realizes what must be done to release their keys: their purity must be destroyed.

As Loki, the player can make decisions throughout the game which may affect the narrative. For example, starting with Svia, the player can decide whether they want to "train" her personally or leave her to the whims of the animalistic jotnar or the inhuman monsters of Hel. The game features full Japanese voice acting for both Svia and Sigurd.