Wine Girls - Vol. 1 Ch. 5

[MangaDex]

 

[Lilliwyt]

20+ for USA and Japan thought. It's mostly 18+ in Europe

 

[KZO]

Eh, I wanted to see the orgy, don't just time skip to the morning after.

Forcefeeding alcohol while the others undress really shows the best potential about making a manga based on wine girls.

 

[justforthelulz]

Are those glasses really modeled after breasts, as the lore goes?

 

[gronkle]

@Lilliwyt in my family it's 13+, with food and adult supervision. Wine is meant to be shared.

Not champagne though, sparkling wines mess you up.

 

[Khaos]

@justforthelulz
https://www.eater.com/2014/12/10/7339903/breast-champagne-coupe-marie-antoinette
https://www.huffpost.com/entry/marie-antoinette-champagne-coupe_n_1424686
https://en.wikipedia.org/wiki/Champagne_glass#Coupe

 

[UnwantedOwl]

it feels like being hit in the stomach by a car

This makes me think the mangaka has personally tried spirytus.
Edit:
Y'know what, I take that back purely because of this:https://www.mirror.co.uk/news/uk-news/lethal-polish-booze-thats-95-4681226