In Licheng, where beasts disguise themselves as humans, seventeen-year-old Su Wan is an ordinary high school student who is afraid of taking blood even for physical examinations, but he hides the secret of being able to hear "emotional echoes" - the beasts disguised as humans have rust-like malice hidden in their heartbeats. Until her birthday, she discovered that the runes of the awakened ones were floating in the soup cooked by her "mother", and the screams that exploded in her ears made her completely awaken.
The moment she was bound to the "bond" system, Su Wan realized that she was a unique human being, and that the transfer student Tengu who always followed her silently after evening study hall was actually the only awakened person who could catch her emotional fluctuations. "The world is fake, but the bond is real." When the greedy beast was weaving a web under the desk, and the angry beast was hiding in the pile of test papers and grinning ferociously, she held the rune dagger handed to her by the tengu. In the fog full of lies, she not only wanted to survive, but also protected those who were worthy.
