This'll focus mostly on the Uchiha, Senju, and Otsutsuki.
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1. Who are Hashirama's younger brothers? (From oldest to youngest)
2. Who is the Sage of the Six Paths?
3. What was Otsutsuki Kaguya hailed as?
4. Why were the Uchiha and Senju clans in warring states?
5. Who did the Sage of the Six Paths chose as his successor and why?
6. What caused the Uchiha Clan Massacre?
7. It was popularly known that Madara had forcefully taken his younger brother's eyes, but what really did happened behind how Izuna died?
8. How did Minato and Kushina tamed and sealed the Nine-Tails?
9. Who or what did Kaguya gave birth to before she was completely sealed by her sons? What did she made it do?
10. How is it possible that when you combine an Uchiha's DNA with either a Senju's or an Uzumaki's DNA, it creates the Rinnegan?
11. Who is the most powerful Wood Release user?
12. Kakashi was once an Anbu squad leader. What was the name of the team he was leading?
13. What powerful genjutsu can only Shisui perform?
