I Was Betrayed, and I Won’t Stop Until I Use My Dungeon Stream to Plunge My Ex-Girlfriend and the Other Man into Hell

Karasu Kurosu's ordinary high school life is shattered when his beloved childhood friend, Suzuran, is stolen away by Rouga, a charismatic transfer student and wildly popular dungeon streamer. Left with nothing but a heart full of hatred and a cold breakup message, Karasu vows revenge. He decides to enter the high-stakes world of dungeon streaming himself, hoping to surpass his rival and make Suzuran taste the same despair he feels. However, his first foray into a real dungeon is a pathetic failure, leaving him utterly crushed by his own weakness. Just as he hits rock bottom, a cryptic message from a mysterious girl named Sui Hisui appears, offering him the power he craves. This single message becomes a lifeline, pulling Karasu from the depths of despair and setting him on a dark path to reclaim his pride and exact his vengeance.