Shin

was a Konoha orphan who was recruited into the Foundation. Even though he was trained to abandon his emotions, Shin grew close to a younger foundation member, Sai. He recognized Sai's talent for art and encouraged him to continue the hobby. Sai looked up to him as a brother and began to shed the Foundation's teachings, but Shin soon died of disease and Sai's training suppressed most of his memories of Shin. After Sai meets Naruto Uzumaki, who he notes to be similar to Shin, Sai's memories of him return, which brings a smile to his face.