How does Jaraiya know Konan?
Konan used to be Jariya's student long with Pain( Nagoto) and Yahiko.Konan, Pein, and yahiko were Jiraya's students. Jiraya left them. They were orphans at the rain village. Pein and Konan used to be good until yahiko died. Pein went crazy afterwards and Konan followed.