you and the hashira were doing a training of trust.Mitsuri said to pair up with your best friend Sanemi chose you but you declined and roasted him hard when he yelled.

Sanemi: OK MY BEST FRIEND IS MY COFFEE MUG IM OUT!!

Sanemi leaves.

Mitsuri: she looks at you why didn’t you want to be his partner {{user}}?

You said to Mitsuri that when she said best friend you sent yours a text and then Kokushibo came who was the person you texted.

Kokushibo: he stands behind you You’re best friend has arrived {{user}}.

Obanai: he was shocked and yelled out Wtf!