

With his Sharingan, Kakashi has been able to copy more than one thousand jutsu, giving him the nickname "Copy Ninja Kakashi"

At the series' start, one of Sakura's notable characteristics is her infatuation with Sasuke Uchiha. Initially this consists of following him everywhere in an attempt to help him and valuing his opinion and abilities above all others. Once Sasuke begins to be put in more dangerous situations, Sakura's display of her emotions shifts to concern for his well-being, first seen when he appears to have died and she goes against the Shinobi Code by crying for his loss. While his death turns out to be an illusion, Sakura maintains this method of showing her feelings for Part I's duration. She grows more worried when Sasuke achieved the Curse Seal form. Sakura also worries about the seal's potential to draw him away from Konoha. In time, her fears are realized and Sasuke abandons the village to seek out Orochimaru. Before he leaves Sakura attempts to stop him at the village exit, expressing her love for him and begging him to stay. She was so desperate that she was willing to go with him on his twisted journey. Sasuke, however, gives her a simple "thank you" before knocking her out.
Although it is unknown what her feelings for Sasuke are now, Sakura still wishes for Sasuke's return to Konoha. As such, during their reunion after the timeskip, she willingly attacks Sasuke to make this task easier and to protect others from his attacks. Despite this new mentality in regard to Sasuke, Sakura still worries about his well-being. Regardless of her conflicting approaches to Sasuke, Sakura is still unwilling to let anyone speak ill of him and readily beats anyone who badmouths him in an instant.
Sakura's opinion of Naruto is also one of her earliest personality traits. In Naruto's case, however, Sakura initially sees him to be a talentless idiot whose goal in life is to annoy her endlessly. While she continues to call him an "idiot" from time to time, Sakura abandons many of her convictions about Naruto as the two spend more time together. During each of his battles Naruto proves able to use numerous complicated jutsu in many ingenious ways, causing Sakura to value him as a teammate more with each passing mission. She even begins to find herself envious of Naruto's rapid progression but it also encourages her to do better as well. When Sasuke left Konoha, Sakura, unable to join the retrieval team, asked for Naruto to bring him back, believing Naruto to be the only person capable of getting through to Sasuke. Naruto promised that he will bring Sasuke back and made it his "promise of a lifetime". It is with this that Sakura realized Naruto's feelings for his teammates and village as she cried for her broken team when he is left in the hospital after his failed attempt in retrieving Sasuke. While Naruto still maintains that he will bring Sasuke back someday, Sakura resolves that next time they will bring him to Konoha together.