One Monday morning, the Salaryman is getting scolded by his Chief Manager for not able to satisfy his quota. After seeing a pamphlet of a gym named Tawawa Sports, he opted to visit.
A female employee asks if Kouhai wants to go on a blind date. When she refuses, the female employee mentions Kouhai's ex-boyfriend in front of the Senpai.
One Monday morning in Summer, Ai tells Salaryman that she's going to spend her summer vacation with her cool and popular best friend while Salaryman complains that unlike students, workers barely get a day off.
One Monday morning, an office worker attends his junior high school reunion and meets a woman whom he missed his chance with back in their student days.
One Monday morning, Salaryman asks what Ai did during Christmas, which she initially refuses to answer. Later, she reveals that she ''has taken a step into adulthood'', going from ''I-chan'' to ''J-chan.''