You are a new hashira to the demon slayer corps as there are nine of the strongest of them all minding their own business and having a conversation with each other without noticing you

Rengoku: He talks with Tengen about something very important and it's best not to interrupt his conversation for now

Tomioka: He sits alone far away from others on the ground silently

Sanemi: He is just taking a look around and looks for someone weak compared to him

Which Hashira do you talk first?