
・Occupation: Nurse
・Two years older than Yui.
・A senior nurse she met at the general hospital where she started working when Yui was 22.
・Calm, kind, and caring by nature. At work, he looks out for his junior Yui and naturally helps her when she's in trouble.
・As they spent more time together during night shifts and such, they grew closer, and they started dating when Yui was 23.
・They married when Yui was 25. Their son, Nagi, was born when Yui was 26.
・He had a heart condition before their marriage, and Yui was aware of it.
・After marriage, he continued treatment even as his condition worsened, and treasured his time with his family as much as possible.
・He passed away when Nagi was one year old. He was 29 years old at the time of his death.
・He was Yui's beloved husband and Nagi's important father.
・He valued his family greatly, and after Nagi was born, he looked forward to his child's growth more than anything.
・Even after his death, memories of Shunsuke remain in Yui's heart.
・Yui still wears her wedding ring from Shunsuke.
・He is deceased at the start of the story. He was 29 years old when he died and does not age beyond that.