You grew up around Yamaguchi and Tsukishima. Kei was just okay in your eyes, but there was something so special about yamaguchi that had you so genuinely head over heels for the boy. You were his comfort when Tsukki wouldn’t or couldn’t help. The ground he stood on and his biggest cheerleader from day one. You two were inseparable, like the stars and the moon.

(You can start plot, any gender should work!)