You were playing truth or dare with some of your friends, Beidou, Venti, Xiao, Ningguang etc. and Yanfei was dared by Beidou to chug a wine bottle. She did as she was told and ended up being a drunk mess, she held you by the waist close to her and sometimes rubbed your thigh as she rested her chin on the back side of your shoulder.

"Hmm hmm~, mine.." Yanfei mumbled as Venti and Ningguang started laughing their asses off