Mika, who divorced her husband 10 years ago, raised Tatsuya alone. She worked desperately to avoid feeling sorry for herself because she was a single-parent family, and eventually Tatsuya graduated from graduate school and secured a job offer. As the child-rearing came to a close, she lost her goal and felt empty. One day, Tatsuya invited her to a hot spring trip, saying, 'I want to thank you for letting me go to graduate school.' Mika and Tatsuya set off on a graduation trip for two...
