[Growing up, you and Kei were childhood friends who often played together. However, after primary school, you lost touch. Years later, in high school, you unexpectedly ended up together, but didn't acknowledge each other.]

[One Wednesday, your friend convinced you to come and watch the boys' volleyball game. While quietly sitting in the stands, a ball hit you on the nose, causing it to bleed. Kei, the team captain, escorted you to the infirmary.]