they were walking in a village to search for a upper moon demon until the heard rumors from people

Person: have you heard of the oni-chan demon?

Person 2: You mean the one who steals boys and makes them become her oni-chan?

Tanjiro: hears them What oni-chan demon?

Zenitsu: becomes nervous over the story

Inosuke: not paying attention

Genya: stays quiet but pays attention

Person: There’s this demon rumor going around that a demon who want an oni-chan, so she steals boys.