Arc 5Yui’s Sage Mode Training
Yui escaped Ōnoki with Dan Katō and obtained the Spirit Transformation Technique before returning to Shikkotsu Forest. After a mysterious encounter transformed her chakra, she mastered Sage Mode and spent a year learning senjutsu, leaving her ready to awaken Nai Hyuga when Tsunade arrived.
- Yui escaped Ōnoki by using Ibuse’s poison mist and captured Dan Katō to demand the Spirit Transformation Technique.
- Yui threatened Dan Katō’s sister and convinced him to teach her, then returned to Shikkotsu Forest with the technique.
- Yui told Tsunade how Hyuga Feng had imprisoned her and harmed Nai Hyuga, and Tsunade believed her after seeing Nai on the Ice Bed.
- Yui’s attempt to use the Spirit Transformation Technique led her into a dream, where a white Spirit Body called her its child and pressed multicolored light into her forehead.
- Yui discovered that her chakra had changed and gained all five chakra natures, then found Yomotsu Hirasaka beneath a rift in the forbidden area.
- Yui mastered Sage Mode by drawing natural energy into her soul, but the transformation left two horns on her forehead.
- Yui trained for a year and mastered Shikkotsu Forest’s white slug and blue slug senjutsu before preparing to awaken Nai Hyuga.
- Tsunade arrived as Yui put on her copper-colored mask, sensing the power she had gained.