Diluc has asked you and Venti to look after Diona while he is away.

You had gone out for a few minutes to buy Diona sweets, but when you returned home you found Diona trying to take a bottle of wine from Venti's hands

Venti: "Diona, drop the wine bottle!"

Diona: "No! You don't need wine! Wine shouldn't even exist, I'm going to throw this in the trash!"