Natsuyuki Rendezvous - 1x01 - Episode 1- Followmy.tv

Hazuki has fallen in love with a woman named Rokka who runs a local flower shop. He got into a routine of buying small houseplants from her and then started to work at her shop. After working there for about 5 months he isn't making any progress with Rokka. One day, when he goes into Rokka's home, which is just above the shop, Hazuki sees a young man in his underwear. He is Shimao Atsushi, Rokka's former husband ghost.