Ikusa Otome Suvia

In this 4-episode OVA, the gods of Norse mythology get a very adult makeover that explores exactly that. The setup is genuinely interesting: Odin has been captured by the King of Hell, with Loki playing both sides as the treacherous architect of the whole scheme. The Valkyries who tried to rescue Odin failed, and now they're enslaved by demons. To buy his own freedom, Odin does something desperate — he seals off the river feeding Yggdrasil, the World Tree, which would eventually destroy everything. So now Loki, who caused this whole mess, needs to find two keys guarded by the most powerful Valkyries left standing: Sigurd and Suvia. Suvia herself is a Valkyrie princess, and she's not going down without a fight. The real tension comes from the fact that Loki is technically the villain here, but he's also the one trying to prevent the apocalypse. It's morally messy in a way that's more interesting than you'd expect from this genre. If you've watched Ikusa Otome Valkyrie or Valkyrie Svia and wanted something with a similar mythological flavor and explicit content, this scratches that itch. The art leans into traditional dark fantasy aesthetics rather than anything modern or slick. Going in knowing it's a hentai OVA based on a visual novel sets the right expectations — this isn't trying to be a deep mythological epic, but the framework it builds around the adult content is more layered than most.