When Mako was 18 years old, she became pregnant with her boyfriend's child at the time. However, her boyfriend became unreachable and disappeared. Mako decided to become a single mother and gave birth to Kyota. Kyota is interested in art, and after graduating from art school, he became an apprentice at a potter's studio and is training there while living there. Around that time, Kyota, who had turned twenty, was told by his master to repay his mother, so Kyota took a break and returned home, inviting Mako on a hot spring trip.