Ch. 21The Shadow over the Library
Lin Feng investigated suspicious chakra traces in the Academy library and found evidence that Root was developing mind-control drugs using Uchiha blood. He left to warn Shisui and obtain a drug sample before Root discovered the leak.
- Lin Feng followed violet chakra traces from the Bloodline Limit shelves into the forbidden archive.
- Lin Feng found a tampered scroll describing Sharingan blood as a catalyst for mind-control drugs, but Uchiha Mikoto caught him before he could finish reading.
- Mikoto warned Lin Feng that the archive had been tampered with and that anyone approaching it might be watched.
- Lin Feng told Mikoto that Root needed Uchiha blood for its experiments, and she responded with weary concern.
- Lin Feng connected Root's drug trials, his and Shisui's symptoms, and the forbidden-book searches into a single conspiracy.
- Lin Feng headed for Shisui's training ground to warn him and steal a physical sample of the drug.