(No system + non-Uchiha protagonist + ninjutsu development + reasonable logic)

I was reborn into the world of Naruto, but I didn't become a member of the Eye Legend. But without the system, how can I live?

Fortunately, I still remember the cultivation of immortals in my previous life. Watch me become a legitimate immortal of the human race! Develop ninjutsu, develop storm escape, and develop the immortal mode of the human race! I can become the strongest in the ninja world!

If Uchiha can implant Hashirama's cells, then as a descendant of the Senju, can't I get a Sharingan?

This book does not involve Boruto: Naruto Next Generations.