It is a Six-foot (or something) based manga, about Kakashi Hatake as a thirteen year old with Rin (who likes him like Sakura), and Obito Uchiha (who acts like Naruto).
They also have their Sensei, Minato Namikaze, Naruto's Father (Naruto doesn't know that),and Kushina Uzumaki's wife.
It explains how Kakashi learned Sharingan not being an Uchiha, it also explains how Kakashi became a Joinin, and it shows how Minato Uzumaki, Namikaze was like.
This takes place right after Kakashi, Obito, and Rin take the Chunin Exams.
Chat with our AI personalities
No. Kakashi Gaiden is in Shippuden for both the anime and manga.
www.onemanga.com
Rin was on Kakashi, Obito and Minato's team, she was their medic nin and was the one who transplanted Obito's remaining eye into Kakashi. For more info read this: http://naruto.wikia.com/wiki/Rin
Obito Uchiha, deceased comrade of Rin and Kakashi Hatake, and also a student of Minato Namikaze before he became the Fourth Hokage, was thirteen when he sacrificed himself in order to save Kakashi.
Obito Uchiha is in a special 6 part episode called the Kakashi Gaiden set during the Third Great Shinobi World War.