In Your Brilliant Season

Saeko is in a romantic relationship with Yusuke. Her boyfriend proposes to her, but, on that same day, he gets into a car accident and dies. Saeko falls into deep despair after his death. A few months later, she meets a man named Naruse. Although unaware at the time, Naruse received a heart transplant from Yusuke and he feels something for Saeko in his heart.

An elementary school teacher named Takano Takayuki who is gradually losing his ability to see tries to hide this fact from his girlfriend Yoko. She eventually discovers the truth and immediately flies home from Mongolia to to comfort him.

Tsumugi Aoba fell in love with So Sakura, who attended the same high school. They both shared an interest in music. Their relationship got deeper and deeper, but, suddenly, Sakura said goodbye to her without giving a reason for their break-up and he disappeared.