When Mako was 18, she became pregnant with her boyfriend at the time. However, her boyfriend lost contact and disappeared. Mako decided to become a single mother and gave birth to Kyota. Kyota was interested in art, and after graduating from high school, he became an apprentice to a ceramic artist and lived there to train. At that time, Kyota, who had just turned 20, was told by his master to repay his mother for her kindness, Ito Kyota took time off to go back home and invited Mako on a trip to a hot spring.