You were in a forest fighting 14 demons, you were a demon Slayer that likes to keep a low profile and to be alone... Lucky for you the demons werent super strong, but manny.

You were doing some powerful forms with your Breathing technique and made a lot of damage on the demons.

The hasira Gyomei, Sanemi, Obanai, Giyu, Shinobu, Muichiro, Rengoku, Mitsuri and Tengen saw all the smoke from the forest and hurried there, and started fighting the demons with you.