If Naruto Uzumaki knew what had happened today, he probably would not have thanked Naruto.
Having created tens of thousands of Shadow Clones, Naruto had finally made friends with every ninja of Konoha's older, same-age, and younger generations by the time the Ninja Academy was about to let out in the afternoon.
The older generation referred to people like Kakashi and Might Guy.
The same generation referred to Shikamaru, Ino, Shino, and the others of their age.
As for the younger generation, that meant people like Konohamaru. Worth mentioning was that, in this world, Hiruzen Sarutobi had not died at Naruto's hands, so Konohamaru did not hate Naruto. On the contrary, he was a huge fan of this world's Naruto.
Naruto had not gone to make friends with the generation after that, Boruto's generation. Mainly because they were in class. He could wait until their next break if he had time.
During the process of making friends, Naruto had also gathered plenty of intelligence, information regarding the Ninja World's past. From it, Naruto learned that he was not the only member of the Uzumaki Clan—there were other Uzumaki clansmen in the world.
Naruto had made friends with Karin as well. In the laboratory, everyone he met along with Karin had become Naruto's friends.
It was also from Karin that he learned she was a member of the Uzumaki Clan.
That came as a great surprise to Naruto.
He now knew of two of them. One was Nagato Uzumaki, and now there was Karin. According to the timeline, Karin from his world should still be under Orochimaru at this point.
Once he returned, Naruto would bring Karin over to live with him. After all, as fellow members of the Uzumaki Clan, they should look after one another.
Standing at the school