Kyousuke Kamijou

"Kamijou" as seen in the opening

An unknown person with some relation to Sayaka. in episode one Madoka guesses that he is the reason Sayaka wants to go to the CD store.

• He is assumed to be the violinist who appears with Sayaka in the OP
• Is shown bedridden in hospital in episode two, while Sayaka comments that there must be many who would trade their lives for a wish, and that life has been too easy for her.

Speculation

Unnamed person in Sayaka's flashback.

• Kamijou was a famous violonist that Sayaka admires. However, for some reason, he had to be hospitalized and probably either couldn't play the violin anymore or passed away. Upon getting her wish, Sayaka then feels guilty to be so lucky and thinks about him and his misfortune. If Kamijou did pass away, then that could explain why Sayaka didn't give him her wish (yet).

• Kamijou might be Sayaka's boyfriend (which is highly unlikely for a magical girl show) or relative. She might have bought the disc for Kamijou.