4-punkan no Marigold

Mikoto is a 25-year-old man and has worked as an emergency medical technician for the past 3 years. Mikoto also has a special ability. When he touches a person with his hand, he can see the last moment of that person's life.

Mikoto's family consist of his stepmother and 3 stepsiblings. He lives with his 3 stepsiblings, including older stepsister Sara. She is 27-years-old. Even though Sara is Mikoto's stepsister, he loves her. With Mikoto's special ability, he learns that Sara only has 1 year left to live. Mikoto vows that he will do his best to make her happy.

Shirai Yui has decided to take a new job as a secretary at the law firm of her childhood friends, the Kami brothers. Yui has feelings for her older brother, Soichi, but when they meet again for the first time in 18 years, she is confused to find that Soichi has become a cool, unsmiling man. Meanwhile, her younger brother, Yushiro, has always loved Yui, but has not been able to express his feelings. And Soichi has been unable to express his love for Yui due to a childhood trauma. The love stories of Yui, who loves Soichi, Yushiro, who loves Yui, and Soichi, who is jealous of Yui's close friend, all intertwine.

Both have the same concept of being able to see when someone dies and unable to prevent it. In about time, a clock on the persons body is used by the protagonist to tell when they will die.

Koishikawa Miki, a high school student, is told by her parents that they are getting a divorce and swapping partners with another couple. The other couple have a son called Yu, whom Miki becomes attracted to after moving in together.