After Obito Uchiha's intrusion, Shin Uchiha had grown more confident. He had never expected Obito Uchiha, whom he had considered a grave threat, to be so easy to defeat.
Still, although this incident had given Shin Uchiha a clearer sense of both his own strength and Obito Uchiha's, he did not let his guard down. After this probing attack, he had undoubtedly drawn the attention of Obito Uchiha and Black Zetsu, becoming a thorn in their sides that they would be desperate to remove. Besides, the Akatsuki had another troublesome figure-the wielder of the Rinnegan, Nagato. Although Nagato did not take orders from Obito Uchiha and his associates, they might still influence him.
So Shin Uchiha knew that he was not yet strong enough to crush his enemies. If Nagato came knocking, he would not necessarily be overwhelmed or defeated, but Nagato's existence was certainly a threat to him.
If his strength was insufficient, then he would work to improve it. The reason Shin Uchiha had stayed in Konoha rather than running around elsewhere was that he was waiting for Kōrei Uzumaki to recover, so he could copy the Uzumaki Clan's bloodline and constitution.
Moreover, as distant relatives of the Senju Clan, the Uzumaki Clan should also have descended from the Sage of Six Paths, carrying a bloodline passed down from Asura's sage body.
That was why Asura had reincarnated into Naruto Uzumaki in this generation. While Indra had always reincarnated within the Uchiha Clan, Asura could reincarnate within either the Senju Clan or the Uzumaki Clan, because both clans carried Asura's bloodline.
Thus, Shin Uchiha suspected that if he copied the Uzumaki Clan's bloodline and constitution, they might fuse with his incomplete sage body and Wood Release, bringing his sage body closer to completion.
That was also why Shin