Maybe an old enemy who was thought to be defeated but has somehow returned stronger. Orochimaru could be a possibility. He was always obsessed with power and immortality. If Naruto is revived, Orochimaru might see it as an opportunity to study Naruto's new state of being (since he was revived) and use that knowledge for his own dark purposes.
An unexpected ally could be an old enemy from his past. Maybe a Hollow that he once fought and defeated now sees a greater threat in the situation after Ichigo's revival and decides to team up with him. For example, the Hollow might have information about the new forces that are emerging since Ichigo's return and offers to share that in exchange for some form of protection or mutual benefit.
"Rebirth to Su" was a traditional way of writing the word "Su", which meant to renew and regenerate. When there is the meaning of "renew and regenerate","regenerate into Su" can be used instead of "Su". Other words are not allowed. For example, the traditional form of "Awakening" could be used: Rebirth to Su (Awakening).
The original work was equally exciting. You could click on the original work of "The Story of Rose" to understand the plot in advance!
It could also be Makarov. As the guild master, he has a sense of responsibility towards all his guild members. He might have some secret magic or knowledge that could be used to revive Gajeel in a moment of great need for the guild.
Fan Xian had been revived in the second season of " Celebrating Years " with the help of Haitang Duoduo. After Fan Xian was assassinated, he was saved and recuperated for nearly a month under Haitang Duoduo's care. Haitang Duoduo had specially gone to the Temple to find an immortal pill to save Fan Xian. Fan Xian's resurrection was achieved through Haitang Duoduo's help and the healing of the immortal pill.
Ye Qingmei didn't have a resurrection scene in " Celebrating Years ". Although there were some novels and plot outlines related to Ye Qingmei's resurrection, these were not the official storyline of " Celebrating Years." Therefore, it could be confirmed that Ye Qingmei did not resurrect in the end.
Wang Churan was voted as one of the three most popular actors in "Actors Please Take Your Places 2." Although the results of her resurrection were not mentioned, it was certain that she had a chance to return to the stage.
Teng Zijing did not resurrect in the TV series " Celebrating Years." Whether it was in the TV series or the original novel, Teng Zijing had sacrificed himself to protect Fan Xian in the battle on Niulan Street and eventually died. Even though his death had a huge impact on Fan Xian and pushed forward the development of the plot, Teng Zijing did not resurrect. The search results did not provide any information regarding the specific method or plot of Teng Zijing's resurrection. Therefore, Teng Zijing did not revive.
Teng Zijing did not resurrect in the TV series " Celebrating Years." In the show, he sacrificed himself in the battle of Niulan Street to protect Fan Xian and eventually died. Although Teng Zijing survived to the end in the original novel and became Fan Xian's most trusted butler, he did not resurrect in the television series. Therefore, according to the information provided, Teng Zijing did not revive.
Teng Zijing could not be resurrected. Whether it was in the TV series " Celebrating Years " or in the original novel, Teng Zijing did not have a resurrection plot. He had sacrificed himself to protect Fan Xian in the great battle of Niulan Street and had died in the end. Even though his death had a huge impact on Fan Xian and pushed forward the development of the plot, Teng Zijing did not resurrect. Teng Zijing did not revive.