The Rejuvenating Uzumaki

Transmigrated into the world of Naruto, reborn into the Uzumaki clan, and granted an attribute system. With excellent innate talent and background, Uzumaki Masahiko is quite satisfied. "But what the heck is the Warring States period? By the time Konoha is established, I'll probably be... 70 years old?" Until one day, Masahiko discovered another way to activate the system, and he truly started to live younger and younger. "I am the man who will live until the very end of the story!" (The above synopsis is just for show; in reality, it's the daily life of a death-seeking, old immortal who's a total goofball)...... Group is full, please join Group 2, group number: 376533065