Papa's prince

Kirishima has a very hectic life, being a single father and all. One day at the park 6 year old Hiyori meets a very mysterious man. Going against her grandparents rules about talking to strangers she decides to talk to the grey eyed man. She's thrilled to find out hes actually a nice person and has alot of the same interests as her. He's so great in fact, she decides to tell her father about him. What happens one day when Kirishima is running late and decides to employ the raven haired man.