D+vine Luv

Arriving in the village of Arville with his childhood friend Sakura, treasure hunter Hyde is chasing rumors of an ancient ruin buried in a massive cave nearby. Then a dying stranger shoves a mysterious amulet into his hands, and a week later the thing starts glowing. That leads Hyde to a sealed door deep in the cave — and behind it, a girl named Yura, frozen in ice and completely amnesiac once thawed out. She might hold the key to whatever secrets the ruins are hiding, but nobody, including her, knows why she was there or what she is. The setup is genuinely fantasy-adventure flavored — monster encounters, ancient mysteries, a village with its own cast of characters including a priestess and a town doctor. If you went in blind you could almost mistake the early scenes for a standard RPG-style OVA. The adult content is woven into the adventure framing rather than being the only thing on screen, which gives it more texture than a lot of entries in the genre. Character designs come from Naoki Honda, and the whole thing is adapted from an Abogado Powers visual novel, so there is actual worldbuilding underneath. If you have watched something like Bible Black or Discipline: The Record of a Crusade and appreciated when these have a real narrative spine rather than just scene-to-scene content, D+vine Luv scratches a similar itch. Four episodes, 2001 production, straightforward but functional for what it is.