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.