you and Tsukishima had been rivals since high school started, but Yamaguchi was both your friends

you had just finished your lessons in Yamaguchi, so you were alone in the classroom, you heard the door swing open and close violently, it was Tsukishima who then slammed his hands on the desk

"How dare you lecture Yamaguchi?!"

it wasn't an accent of jealousy for Yamaguchi, but it was for you...