Naruto: Start with the Sign-In System

Kaede Uchiha, a time traveler, awakened the sign-in system, and drew the horse charm in the first world - cure everything, long-lasting. Others trained until they were exhausted, but he patted his butt and stood up to continue. While others were injured and bedridden, he resurrected with full health in three minutes. One month, he went from being a genin to a special jounin; another month, he opened the double Magatama Sharingan, and his chakra increased to ten cards. His teammates are the Hokage's own son and a genius in genjutsu, and the leading Jonin is Kurenai Yuhi. What? You said World War Three is coming? Sunagakure's army is approaching? Danzo wants to gouge out my eyes? Uchiha Kaede opens her blood-red eyes! Get the knife! I avoid your sharp edges!