Five years into working at a stationery manufacturer. Due to recent social conditions, the company's management has deteriorated, and there are rumors of a takeover... Then, her boyfriend proposed. Mahiro, who comes from a single-mother household, wants to get married soon to reassure her mother but is torn between that desire and her own hesitation about marriage. Amidst this turmoil, her colleague Atsushi returns to the office during overtime. As they reminisce about their memories from when they first joined the company and drink alcohol together for the first time in a while...
