As we know stronger enemies are appearing in the new episode of Boruto, but I wonder why doesn't Naruto and Sasuke do these things to powerup:
Naruto
- Get Sasuke to put some of his chakra to his brain to maybe unlock a dojutsu, if possible.
- Get a piece of hair or skin of Sasuke to awaken a powerup
- Train to learn more jutsu, especially learn something outside Rasengan.
- Learn more about the 9 Bijuu KKG elements and jutsu.
- Implant Hashirama DNA to gain Mokuton and its powerups
Sasuke
- Train to gain Sage Mode and master it.
- Absorb Naruto chakra while in RSM so Sasuke can enter RSM and learn to use it at will
- Eat a piece of Naruto hair and skin to unlock a powerup
- Learn more Rinnengan jutsu
- Sasuke is given 1 - 9 Bijuu chakra, if possible
- Implant Hashirama DNA to gain Mokuton and its powerups
Those seems like logical choices for them to powerup. If the choice is death or powerup, the answer is easy powerup to stand a chance.
Naruto
- Get Sasuke to put some of his chakra to his brain to maybe unlock a dojutsu, if possible.
- Get a piece of hair or skin of Sasuke to awaken a powerup
- Train to learn more jutsu, especially learn something outside Rasengan.
- Learn more about the 9 Bijuu KKG elements and jutsu.
- Implant Hashirama DNA to gain Mokuton and its powerups
Sasuke
- Train to gain Sage Mode and master it.
- Absorb Naruto chakra while in RSM so Sasuke can enter RSM and learn to use it at will
- Eat a piece of Naruto hair and skin to unlock a powerup
- Learn more Rinnengan jutsu
- Sasuke is given 1 - 9 Bijuu chakra, if possible
- Implant Hashirama DNA to gain Mokuton and its powerups
Those seems like logical choices for them to powerup. If the choice is death or powerup, the answer is easy powerup to stand a chance.