Rin to Hana Saku Majo no Koi

Suddenly, a person's face turns black, and they die a few days later. Futaba Rinka possesses this special ability, and after the death of her parents, she ends up living with her cousin, Nishimiya Saku. Ever since she was a child, Saku has been Rinka's only source of emotional support. He was also her first love. However, Saku has a secret that he hasn't told Rinka..? A love suspense story between a girl with special abilities and a mysterious young man! (Source: Ichijinsha, translated)