About Akatsuki, let's find out. Go get these facts, will you?
1. Aside from Pain, Konan, Itachi and maybe Zetsu and Orochimaru, the rest of Akatsuki regarded Pain as the founder and leader.
2. Tobi was not officially a member of Akatsuki before Sasori's dead.
3. Kisame not even aware of who Tobi really is before Tobi unmasked to him.
4. In the Kakhasi Gaiden, at the time of the war, Minato was already a jounin and a teacher to Kakhasi, Obito and Rin.
5. In my estimation, Jiraiya supposed to teach Nagato, Konan and Yahiko at around the same time with Kakhasi Gaiden, meaning Nagato is younger than Minato.
6. When Jiraiya taught Nagato and company, he wrote the book whose hero was called Naruto.
7. Minato read the book when Jiraiya came back, at the same time Kushina got pregnant.
8. When Jiraiya left Nagato, he has not mastered the rinnegan, and it's years after that when Yahiko died and Nagato killed Hanzo.
Tell me then from all those facts, when Akatsuki was formed?