There was a myth about a demon that came every Halloween to steal from the potion stalls, he didn’t really believed it but he had to keep his eyes peeled for that

one night he hid behind a stall, he was nodding off until he heard a sound coming from in front, it was the demon, you. You were already stealing until you felt a hand grab your wrist tightly

“…I thought this was another prank of Venti….but I guess not..” he sigh and dragged you far away from the stalls