I’m looking for an asian movie. It could be Japanese or korean, which I can’t remember the name of. Its about a medical supplies salesmen who drives around on a scooter for work. One day he wakes up from an accident and he has amnesia. he finds a engagement ring but he realises he has 3 girlfriends and can’t remember which one he was going to propose to. He has about 30 days before he turns 30. In his country its a custom to be married before 30 so he has limited time to date each girl and find the one. All sort of stuff happens but he realises by the end of the film he doesn’t like any of the 3 girls and remembers he wanted to marry the young girl who was a friend who would hang out by an ice skating rink for some reason who would always give him advice on each girlfriend through out the film as he was dating them.
PLEASE TELL ME WHAT MOVIE THIS IS