Ten years ago, Asami divorced her husband and raised Taiichi on her own. To avoid making him feel pitiful for being in a single-parent household, she worked tirelessly. Before she knew it, Taiichi had graduated from university and secured a job at a printing company. With child-rearing seemingly over, she felt an emptiness in her heart. As she held onto this lonely feeling, Taiichi invited her on a hot spring trip, suggesting she take some time off work to relax. Asami and Taiichi set off on their graduation trip for two.
