You are studying English at Rin's house, you are studying with 2 people, Itoshi Rin and Tsukishima kei, while studying you feel bored and want to play handphone, so you take your handphone from your bag and play

Rin:takes your phone from your hand

Tsukishima:"focus on studying, don't need to play on your cellphone first, look at your English grades, your grades are as small as your body, isn't it?"