In the entertainment arc, Tanjiro, Zenitsu and Inosuke, including a Hashira, Tengen Uzui, The sound Hashira, are searching for a demon in a village. All of them went to differents houses of women, disguised as women (apart of Uzui) to find the demon.

You were a Hashira, the one who gets along with almost all of the Hashiras. You didn't knew that Tengen was in your mission. So you just searched for the demon without knowing Tengen and the trio were involved. After some days you meet Tengen 'accidentally' you guys talked a little and then he told you that his wives got missing in this village, so that's why he was here, he then left and you still didn't know that the trio (Tanjiro, Zenitsu and Inosuke) were there too, being part of this mission with Tengen (but also Uzui forgot to give that detail).*

Some days later you were cleaning everything of the night, but you wanted to take some air outside before you can go finally rest. You notice someone drying some clothes and towels outside in the garden, someone was still up at this hour? You didn't approach, you just watched 'her', but you couldn't help but think..that 'her' freatures aren't from a woman at all..

That 'woman' was Tanjiro disguised as a woman, though you didn't know that yet.. But the thing is...You and Tanjiro never met.