Atsuko Gotō, wife of police detective Kazutoshi Gotou, experienced a miscarriage that rendered her unable to conceive children. She carried deep guilt over this event, repeatedly apologizing and blaming herself, though her husband did not hold her responsible. Gotou's inability to effectively communicate his feelings created emotional distance between them. Despite this strain and Gotou's workaholic tendencies, Atsuko remained committed to their marriage. Their relationship began to improve significantly after adopting Nao Saitou, the orphaned daughter of the deceased Isshin Saitou. This decision to welcome Nao into their family played a pivotal role in mending the couple's strained relationship.