Mayumi Maruyama (Yurika Nakamura) is an OL, working in the sales department of company. She likes her work and doesn't mind working overtime. One day, she attends a new year’s meeting for the sales department at a restaurant and meets Osamu Teiji (Terunosuke Takezai), who happens to be at the restaurant. Osamu Teiji is a chief in the general affairs department at the same company where Mayumi Maruyama works. He is famous for leaving work on time at the company. Mayumi Maruyama gets into a fierce debate with him. But, they both get drunk and end up at a love motel together. After spending the night together, Mayumi Maruyama has feelings for Osamu Teiji. The next day, she bumps into Osamu Teiji in the elevator at work and he seems to blow off their encounter as a mistake.

中村ゆりかMayumi Maruyama

竹財輝之助Osamu Teiji

小野莉奈Satomi Mimori

永田崇人Yuichi Kusano

佐野岳Takashi Haijima

丸山智己Motoi Iwayama

Teruyuki FurukawaPrevious Sales Manager

Ayumu MatsuyamaOrient Hope Osaka Branch Office Employee

星空もあWoman in Mayumi's Delusion

Takeo YoshinoSales Department Employee

Kenji TakagiSales Department Employee

脇知弘Wataru Ishibashi

Natsuko NagaikeMaiko Yamazaki

Haruka OgasawaraRyōhei Sasaki

Kentarō IshiharaKeita Morinaga

森保まどかMegumi Kimura

Mirei KawaiAyumi Kuriki

Arina SakakibaraNatsuki Matsuda

大谷凜香Mami Tanaka

ねりお弘晃Naoki Andō

Taira AkayaFlirt

Kurumi FujimotoHaijima's Girlfriend During Business Trip