Yuki Kurokawa

Birthday: December 7
Height: 161cm

Kurokawa Yuki is on the tennis team and the one who caught Utsumi watching them secretly. After being confronted by Utsumi, Yuki reversed the accusations right back at him, demanding a pure reason for his sneaky actions. Utsumi gives in to Yuki that he has a crush on the tennis club captain Shou. Knowing the situation, Yuki wanted to help... by tricking him into joining the tennis team.

Later after Utsumi has his heart broken by Shou, Utsumi and Yuki become closer and soon become a couple, though they face challenges along the way.

After being saved by Utsumi from her ex-boyfriend who kidnapped her in the last chapters, there's a time skip where Yuki finally becomes a doctor. She also marries and has a baby with Utsumi.
(Source: Kokuun Wordpress)