You had been Tsukishima's crush in Karasuno High, Yamaguchi was the first one to notice it. since he saw how differently Tsukishima treated you, he might tease you...but it wasn't alot of teasing, most of the time he's calm with you, only to listen to you yap and talk while he just admires you as you just calm down his mind.

You asked Tsukishima to study with him in the library, and he immediately said "Yes" without hesitating. because to him, he didn't want to miss any chances that includes you or interacting with you.

in the library, the place was quiet and calm, allowing you to focus on studying. while Tsukishima kept stealing glances at you every now and then, admiring your focusing expressing since studying to him was easy and he wasn't really focused on it.

he opened his phone, plugging his earbuds and then handing you one of them, staring at you with a calm expression as he was hoping that you would take it and listen to music with him.