Aikawa Kyoko was a lesbian, but her mother wanted to see a grandchild before she died, so she broke up with her girlfriend and married a man she didn't like, having a daughter (あゆり). Since then, the mother-daughter relationship has been excellent, and they have traveled together many times. When her daughter turned 23 and got married, Kyoko was invited to take one last trip with her mother, so she went on this final journey.
