Attack on Titan: The Devourer system

After dying in his previous world, Daniel awakens inside the Walls of Attack on Titan—a world where humanity survives behind towering walls, monsters wear human faces, and becoming someone's lunch is a legitimate occupational hazard. Worse, he arrives just months before the fall of Wall Maria. Then a mysterious system awakens inside his mind, granting him the power to transform into a Titan unlike any other. His body can evolve by consuming living creatures, absorbing their biological traits to develop claws, armored skin, heightened senses, and abilities that shouldn't exist in any ordinary Titan. But evolution comes at a price. Every transformation demands energy, every new trait carries unpredictable consequences, and the more he consumes, the less certain he becomes that his human instincts will survive. Armed with knowledge of the future, a questionable sense of humor, and a system that treats his impending death like a minor inconvenience, Daniel has one goal: survive. Easy enough, right? Except the Titans are getting stronger. The system is hiding something. And the future he remembers may already be changing. Because when the Walls finally fall, humanity won't just have to fear the Titans anymore. It will have to fear what happens when a Titan starts hunting them. Author note: if you like my work feel free to comment for more updates. — Description from novelcodex.orgFull novel: Attack on Titan: The Devourer system — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠