Natsuyuki Rendezvous

Natsuyuki Rendezvous (夏雪ランデブー) is a Japanese manga series by Haruka Kawachi. It was adapted into an anime television series in 2012. The anime series has been licensed by Sentai Filmworks in North America.

Plot
A young man named Hazuki decides to work at a flower shop after he falls for the owner, Rokka. Unfortunately, Hazuki can see the spirit of Rokka's dead husband, Atsushi, who has made a point of sticking around and interfering with any relationship Rokka may find herself in. What Atsushi didn't count on was being visible to Hazuki.