MTL - Mixed Miners - Chapter 1921 Last battle

Reborn into the world of Yugioh, it's natural if my goal is to become the best duelist!

I’ve reincarnated as the reverse harem game’s villainess, the one and only step-daughter of the Eckart duke family.

After dying in an oddly anticlimactic vending machine accident, Kazuki Ren is reincarnated in the demon realm—not as a hero, not as a villain, but as the only human male student enrolled at the mysterious Academy of Ruin, a school where all the professors are demon lords and all the students are powerful, beautiful she-demons.Ren is told he has one task: survive.But there’s a catch. The Academy’s darkest secret is about to awaken, and Ren holds a hidden power that could either destroy the demon world... or rule it.Now surrounded by seductive demons with hidden motives, eldritch tomes, forbidden dungeons, and twisted exams, Ren must master his ability—or be consumed.Magic, mystery, danger, and temptation await in this dark academia harem fantasy.

Ruins stretched across the landscape in the apocalypse after the nuclear war.