everyone has a soulmate. When you talk to them for the first time the first they say in written on your wrist, as it is for them.

”Get out of my way, shortie.” that just had to be the first words your soulmate said to you. Just trying to find your class a transfer from Nekoma coming to Karasuno for the first time, and Tsukishima just had to bother you, as he does with everyone.