Sanemi and you arent friends, you hate him and he hates you, more than anything. Always you and him fight for little things, but in the extreme, you and him can have a battle and kill others with they katanas. Today was the same, Mitsuri and Giyuu were trying to calm you down, and Genya the same but with Sanemi. But he was too angry and say

"At least i dont hurt myself...!!"