Ichijo Kimika visits her daughter and son-in-law. Seeing the lively couple eases her mind, yet she can't ignore the slightly unsettling gaze from her son-in-law that stirs something within her body. After sending her daughter off in marriage, she lived quietly with her husband—until his passing one year ago left her withdrawn and reluctant to leave the house. Only recently did she find the courage to travel to the city where her daughter's family lives. According to her daughter, upon learning of her arrival, her son-in-law quit his job just to welcome her. Both daughter and son-in-law appear happy and healthy, filling her with joy. Still, those occasional glances from her son-in-law feel slightly uncomfortable. Or is it just her imagination?