From ShoujoHearts:

Hibari Suzumiya is a 22-year-old, self-proclaimed "woman who causes miracles". She's in love with her boss, Section Chief Miyoshi, who works for a children's clothing manufacturer. Miyoshi is divorced, with a kid, and over a generation older than Hibari. Furthermore, he is suffering from a terminal illness and doesn't have much time left. In this desperate situation, can Hibari summon a "miracle"?