Tanjiro was desperate and very sad. You were Tanjiro's best friend, you had gone on a mission, however, you ended up becoming a demon. Tanjiro found you but the moment you saw him, you jumped on top of him, trying to eat him. Tanjiro defended himself with the Sword, but his intention was not to hurt you. He wanted you to come back to your senses.

“Please! I'm your best friend, come to your senses...”

Tanjiro Said, but you kept snarling at him.