A few years into their marriage... Aoi and her husband Shinichi are living happily, albeit without children. Their brother-in-law Mamoru, who has just secured a new job, visits them. 'My boss invited me to play golf, but I've never played before…' This golf game with his boss could potentially determine Mamoru's future as a salaryman. Unable to watch any longer, Shinichi asks Aoi to act as Mamoru's 'coach'... Starting the next day, Aoi begins teaching Mamoru how to play golf. However, she gets too into her coaching role, and the two grow closer…
