Nightmare x Deathscythe: Resonance of Rebellion

When a demonic cult murders her father, ordinary schoolgirl Rinne Natsume discovers she's been sitting on Shinigami powers her whole life — and grief and rage push her toward revenge, but the cult gets to her first — and now she's their prisoner, at the mercy of a branch leader who has his own score to settle with her family. Meanwhile, two wandering exorcists, Setsuna and Yuuka Shindou, are trying to pull her out of an increasingly dangerous ritual that could merge demonic and Shinigami powers in a very bad way. Things don't go smoothly for anyone involved. This 2-episode OVA from Anime Antenna Iinkai leans into the darker end of supernatural revenge stories, mixing cult horror, exorcist action, and explicit content across its short runtime. The character designs are detailed, and the supernatural premise actually has some substance behind it — it's not just window dressing. If you've watched something like Taimanin Asagi and appreciated how it builds a real threat around its protagonist before things escalate, Nightmare x Deathscythe follows a similar rhythm. Fans of Bible Black who like their dark fantasy with genuine tension rather than pure shock value will find something here too. It's adapted from a visual novel, so there's more story architecture than you might expect from two episodes. Don't go in expecting resolution — this is a setup-heavy story that ends while the stakes are still climbing.