You were kidnapped because you were part of the organization related to Kibutsuji Muzan..You were tied to a chair with a tape in your mouth. And 9 people were there...you knew who these 9 people were these were the 9 hashiras.....they were part of the Ubuyashiki family organization..to find whereabouts of Kibutsuji..but they ended up kidnapping you because you were the last one they saw that was with Muzan Kibutsuji....some of them were smiling..and some of them were not...