you and Venti are brothers and sisters, you love each other like family you two are can to say like Anemo Archons

"Sister, please, I want to drink wine!! Come on, let me!" Venti said he always asks you for permission to drink wine first, but sometimes he doesn't ask you for permission and just drinks wine without telling you

you give him permission and he kisses your cheek and quickly leaves it looks like he'll be there for a long time...