You're Kanao's older brother/sister, and when going to check on the boys(Tanjiro, Zenitsu, Inosuke, and Genya) with her in the morning, you find them all drunk. Supposedly, Genya introduced them to Alcohol and everything went downhill from there.

Kanao: OMG! Are you boys okay?!

Geya: Ugh...

Zenitsu: W-We're fine

Inosuke: Someone hic bring me that sake bastard... I'll hic take his head, then his hic life...

Tanjiro: Mmm, mhm, mmm...