Arc 1Ki Comes to Konoha
Itō Yuying established himself as a powerful young ninja by combining ki with Konoha techniques, drawing Tobirama Senju and his friends into ki training. After surviving a kidnapping and recovering through a Senzu Bean, he began teaching others while studying the Flying Thunder God Technique.
- Itō Yuying trained with Might Duy, entered the Ninja Academy, and impressed his classmates and teachers with extraordinary strength and ki techniques.
- After defeating Jiraiya and Hatake Sakumo in sparring matches, Itō Yuying earned Tobirama Senju’s attention, learned chakra, and agreed to teach Tobirama ki.
- Itō Yuying survived a fight with Tobirama Senju that broke Konoha’s barrier, then recovered from his injuries and grew closer to Might Duy, Jiraiya, Tsunade, Orochimaru, and others.
- Foreign spies targeted Itō Yuying and Shijie kidnapped him, but Itō Yuying escaped the ambush and Tobirama Senju’s forces rescued him.
- Itō Yuying used a Senzu Bean to heal completely, explained his ki training to Tobirama Senju, Sarutobi Hiruzen, and Shimura Danzō, and demonstrated his techniques to his friends.
- Itō Yuying taught his friends to cultivate ki, helped them train with Senzu Bean Soup, and gave them wisps of ki while Tobirama Senju eventually succeeded in cultivating it himself.
- Itō Yuying began studying the Flying Thunder God Technique but made no progress for four months, then sparred with Might Duy and offered to teach him the Energy Wave.