Ajin: Demi-Human is a dark action thriller manga written by Gamon Sakurai (with early story by Tsuina Miura).

The story follows Kei Nagai, a high school student who discovers he is an Ajin—an immortal being who cannot die. After surviving a fatal accident, Kei becomes a target of the government, which wants to capture and experiment on Ajin.

Forced to run for his life, Kei must navigate a brutal world where Ajin are hunted, feared, and used as weapons. Meanwhile, the mysterious and terrifying Sato leads a group of Ajin terrorists, pushing society into chaos.

With intense action, psychological tension, and morally complex characters, Ajin: Demi-Human delivers a unique take on immortality and survival.

🔥 Why You Should Read It

• 💀 Unique concept of immortality (Ajin)
• ⚔️ High-stakes action and strategy
• 🧠 Smart but cold protagonist
• 😈 One of the best villains (Sato)
• 🎯 Dark and realistic tone

Genres

• Action
• Horror
• Supernatural
• Psychological
• Seinen

 Main Characters

• Kei Nagai – A logical and emotionless Ajin trying to survive
• Sato – A charismatic and dangerous Ajin terrorist
• Kaito – Kei’s loyal childhood friend

Quick Info