Before I knew it, my son had graduated from university and was offered a job in the financial industry in Tokyo. - This is the end of raising children. - When I thought about it, I felt like there was a gaping hole in my heart. - What should I aim for in my life from now on?In April, my son will be living alone in Tokyo. - When I was feeling lonely, my son invited me on a trip to a hot spring. - ``I want to go on a graduation trip with my mom who put me through university.'' Marika and her son set off on a graduation trip just the two of them.