Necromancer

Everything in Lester Clieford's world revolves around his terminally ill sister, Mith. After losing their mother, it's just the two of them — he works, he cares for her, he keeps things together. Their bond runs deeper than most siblings, and Lester's devotion to keeping her alive shapes everything he does. Then a mysterious girl enters his life, and the careful balance he's built starts to crack. As Mith's condition worsens, Lester finds himself staring down a door he probably shouldn't open: dark magic, forbidden knowledge, and the question of how far you go for someone you love when conventional options run out. The medieval fantasy setting gives it a grimmer, more desperate texture than your typical modern-day drama — there's no hospital, no specialist to call. Just Lester, his choices, and the consequences creeping in behind them. It's an emotionally heavy watch built around grief, obsession, and moral compromise rather than action. If you've seen something like Bible Black or Discipline: The Record of a Crusade and appreciated when a darker adult title actually tries to carry some narrative weight, this scratches a similar itch. It's a single OVA adapted from a visual novel, so it moves fast and doesn't overstay its welcome. Just go in knowing the tone is bleak from the start — this isn't trying to be uplifting.