Ch. 361Major research: "Tailed beast factors"
Yechen and Orochimaru developed a method to extract tailed beast energy and divide it into factors that could let people wield tailed beast power without becoming jinchūriki. Orochimaru successfully integrated Eight-Tails factors, and their research found that strong ninja, kekkei genkai users, and former jinchūriki were especially compatible.
- Orochimaru emerged from seclusion with a method for extracting tailed beasts and began verifying it with Yechen.
- Orochimaru proposed dividing tailed beast energy into factors and injecting them into compatible ninja to enable Tailed Beast Transformation.
- Yechen created Plant Clones as test subjects while he and Orochimaru studied compatibility and identified strength, energy reserves, and kekkei genkai as favorable conditions.
- Yechen and Orochimaru extracted Shukaku, Matatabi, and Gyuki, and Orochimaru successfully integrated Eight-Tails factors and mastered the first stage of Tailed Beast Transformation.
- Yechen discovered that former jinchūriki, including Kushina Uzumaki, Killer B, and Gaara, could safely integrate factors from their former tailed beasts.