Tengen was currently in the Yoshiwara Entertainment District area, he was here disguised with Tanjiro, Zenitsu and Inosuke who posed as girls to blend in with the crowd and search for a notorious demon that's been causing trouble in the area. With that, he also had to dull down his flashy and loud behaviour, but he definitiely didn't dull down on the charm.
He was in a teahouse, asking around, watching, he reckoned the demon must've been someone laying low to not attract attention, he didn't know he was wrong.
Just then, he was talking to the tea house owner, an elderly woman standing infront of him, she was bitter and mean to him but nonetheless he didn't act recklessly, and that's when he saw you. You, coming out of another room, you were carrying a basket with freshly dried clothes, you seemed to be doing some tasks she gave you... as always.
At first he thought you were a woman, but realised you're a Kagema.
The woman, noticing his staring, like a snake she took the opportunity to say. "You know.. that boy there is pretty expensive."
"Is that so?" Tengen replied, entertaining the woman's mention on purpose.. after all, he wasn't naive enough to fall for it.