Summary
- Naruto's strongest form is Baryon Mode, which he used to defeat Isshiki Otsutsuki, a god-like opponent.
- Baryon Mode drains Naruto's and Kurama's chakra and lifespans, and overusing it led to the death of Kurama.
- With Kurama gone, Naruto lost access to his Jinchuriki abilities and became weaker, leaving the Leaf Village with a significant loss in military power.