Ore wa Tsuma no koto wo Yoku Shiranai

"It's my birthday today," Ruriko sends a message to her husband, Yuto Miyazawa's, cell phone. Meanwhile, on his wife's birthday, Yuto sleeps with other women repeatedly... Ruriko is staring at her smartphone screen in a rotary in front of a suburban train station. The message is marked as read, but there is no reply from her husband. A small car approaches. Ruriko raises one hand to signal, and the car stops in front of her. Ruriko gets into the car and drives away... A little while later, the husband, who is enjoying his affair, receives an unbelievable message on his cell phone. "What...!? My wife jumped in front of a train...!!? Why would Ruriko do something like that... Could it be that she knows about my affair...?" And Ruriko's true purpose is gradually revealed! A shocking mystery of a married woman's affair, drawn by Kaoru Hazuki (art) and Inosuke Rodriguez (original story)!!

(Source: Group Zero, translated)