My Yandere Harem System

Sean thought logging into Yandere Online would be fun. A new full-dive VRMMO where every heroine is dangerously in love with the protagonist? As a hardcore otaku, he couldn't resist. But when the game launched, something went catastrophically wrong. No logout button. No respawn. No escape. Just a cold system message: "Welcome to Yandere Online. Difficulty: NIGHTMARE. Death Penalty: PERMANENT." Sean wakes up in a dying body—a terminally ill teenager who tried to escape his childhood friend's obsession and paid with his life. Now trapped in a fantasy world where dungeons spawn nightmares and magic duels can shatter reality, Sean faces an impossible truth: He's not the protagonist. He's just an extra who inherited a corpse. So why won't they stop looking at him like he's their entire world? IN A WORLD OF MAGIC AND MONSTERS, LOVE IS THE DEADLIEST WEAPON He has no mana. No combat skills. Just a dying body and a stamina bar that counts down to permanent death. His only salvation? A cursed gift called 『Resonance Enhancement』—the ability to borrow supernatural powers from girls whose affection for him crosses dangerous thresholds. But there's a price. The more they love him, the stronger he becomes. And the more likely they are to kill anyone who gets between them. THEY'LL TEAR THROUGH ARMIES TO REACH HIM CRITICAL WARNING * Tactical MC fighting impossible odds with zero combat ability * Brutal dungeon raids where death is permanent * Magic duels, monster invasions, and faction warfare * Yandere heroines who will burn the world for him * Stamina-based enhancement system—run out and die * Psychological horror meets high-stakes action * LitRPG mechanics where affection = power = danger * Mystery: Who trapped him here, and why? No plot armor. No second chances. No logout. Just 100 days to escape before the true nightmare begins. 100 Power Stones = 1 Extra Chapter 100 Golden Tickets = 2 Extra Chapters Gifts above 1000 Coins = 2 Instant Bonus Chapters