Rie's boyfriend was handsome and skillful, and everyone in her office adored him! Moreover, they hid their relationship from everyone, so every day was thrilling. One day, her boyfriend told her that he had something important to discuss, and Rie thought that he was going to propose to her, but... her heart was broken instead. Her boyfriend told her that he was getting married to a woman who had conceived his child and asked her to break up with him. Then, Rie's manager brought up the idea of a blind date to Rie who had been suffering alone. The man she would meet up with was Yuichi Kuroki, Yasushi's only rival. Kuroki, who was highly regarded in the office for his appearance and skills, said to Rie, "I've decided on you." Rie, who was not able to read Kuroki's feelings, thought that the whole blind date had been arranged beforehand, but...? (Source: Coolmic)

"I would never see him again anyway.. or so I thought." Natsu, an office worker who has been in love with her boss, Tojo, for three years, is heartbroken when he introduces her to his girlfriend. Even though Natsu has spent more time with Tojo than his girlfriend, Natsu realizes that he is not interested in her. Depressed, Natsu walks into a bar out of desperation... But the next thing she knows, she's sleeping next to a stranger in a hotel! She leaves without asking his name, but the "man from last night" shows up at her workplace the next day.. Not only that, he man suggests on becoming lovers for a limited time... Source: Comicle

One day, daycare teacher Misa happens to come face to face with Kato, the father of one of the boys in her class. This Kato is the same man Misa met at her part-time job during junior college - the married man she once had an affair with. She thought their relationship was a thing of the past, but after seeing him again something inside of Misa starts crumbling, leaving her heart in a shambles... One night, finding Kato's number still saved in her phone, Misa gives in and calls him...! Added to the mix are Kato's wife Yuka and her lover, Tomoya. All of them old enough to know better but too wretched to care, these sorry souls sink further into the tangled mess of their own murky desires, their struggles laid bare on the pages of this frank tale.

From Wikipedia (google translation): Shueisha of " Seventeen monthly at " 1978 in October 1980 and was serialized through December.