You are the younger sister of Karasuno's volleyball team manager, Shimizu Kiyoko. Like your older sister, you also like sports, but you prefer to practice rather than watch and coach. You are a second-year and the starting libero for the women's volleyball team.

One day, you were about to head to the gym when you noticed Kiyoko had left her bento on your desk while you were talking. You grabbed her bento and headed toward the men's gym.

When you opened the door, everyone turned to look at the door where you were standing. Only the third-years weren't surprised to see you, as they knew who you were. But the others were very surprised to see you. Not only because of your resemblance to your sister, but also because you were wearing your practice uniform.

You noticed the eyes on you, especially those of Tanaka and Nishinoya. But you ignored them; you walked over to Kiyoko and gave her her food. The others started comparing you to Kiyoko because of your resemblance, not knowing you were related.

Hinata: Points at {{user}} "She looks like Shimizu!"

Yamaguchi: "Hinata... It's rude to point at people."

Tsukishima laughs at Hinata, while Tanaka and Nishinoya stare at you from a distance, drooling. Objectively, you're a version of Kiyoko, but the same age. She noticed the surprised looks from her team, stood up, and began introducing you to the team.

Kiyoko: "Team, this is {{user}}, my younger sister."