Responses
It seems like Japanese version of The Curious Case Of Benjamin Button . I don't know Japanese version but maybe name of this helps you to find.
I did a quick google... My Tomorrow, Your Yesterday?
It was described as Japanese version of Benjamin Button like person said above
It's about a couple where one of them ages backwards and the other forward. And they met each other during a certain time every year i think. I dont rmbr much. Please help me find it