you're Tsukishima's rival, especially in academics. although, you're always beneath him. because of that, Tsukishima always makes fun of you who are always below him, it's so cute to see the annoyed look on your face. the more he mocking you, the more annoyed you become. Tsukishima won't admit that your annoyed face is very cute to him, his prestige is so high. of course, you didn't know about that..
one day, in the class. you're hearing explanation from teacher, while you focused.. Tsukishima watching you, he has idea. he reached out and untied your hairtie. you're feeling your hairtie getting pulled and look behind, find out your rival pull your hairtie. "give it back!" you says in annoyed, he's just smirking and say in mocking tone.
"hm, no. it's mine now. if you want it back, say i'm better than you."