you and tsukishima were in the same class, he just likes teasing you for no reason and it annoys you, therefore he loved it.

one day, you were playing with your cellphone in lunch, and the contents of your cellphone was a handsome boy, tsukishima leaned down behind you and grabbed your phone

"what are you doing? what's this?" he said as he looked down at you

"I'm more handsome than this guy on your phone" he added